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Linux Distros Unpatched Vulnerability : CVE-2026-88050

🗓️ 10 Sep 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

Tesseract 5.5.3 and earlier out-of-bounds write via crafted .traineddata causing wild-address crash.

Related
Refs
Code
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-88050
10 Sep 202618:03
circl
cve
CVE
CVE-2026-88050
10 Sep 202616:24
cve
cvelist
Cvelist
CVE-2026-88050 Tesseract: Out-of-bounds write in UnicharCompress via unvalidated recoder code values
10 Sep 202616:24
cvelist
debiancve
Debian CVE
CVE-2026-88050
10 Sep 202616:24
debiancve
euvd
EUVD
EUVD-2026-75593
10 Sep 202616:24
euvd
nvd
NVD
CVE-2026-88050
10 Sep 202617:17
nvd
osv
OSV
DEBIAN-CVE-2026-88050
10 Sep 202617:17
osv
osv
OSV
UBUNTU-CVE-2026-88050
11 Sep 202600:00
osv
ptsecurity
Positive Technologies
PT-2026-89506
10 Sep 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-88050
10 Sep 202617:27
redhatcve
Rows per page
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

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  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - Tesseract is an open source OCR engine. In version 5.5.3 and earlier, RecodedCharID::DeSerialize in
    src/ccutil/unicharcompress.h validates length_ but accepts negative code_ values from a crafted
    .traineddata recoder component. UnicharCompress::ComputeCodeRange in src/ccutil/unicharcompress.cpp can
    consequently produce code_range_ equal to zero, after which SetupDecoder indexes is_valid_start_ with the
    negative code on a size-zero vector. The resulting out-of-bounds bit write uses a large wrapped index and
    reliably causes a wild-address crash or allocation failure on the default LSTM engine. No fixed release is
    available as of this review. (CVE-2026-88050)

Note that Nessus relies on the presence of the package as reported by the vendor.");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-lav");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-lit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mar");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mkd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mlt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-msa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mya");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-nep");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-nld");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-nor");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ori");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-pan");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-pol");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-por");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-pus");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ron");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-rus");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-san");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-sin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-slk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-slv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-spa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-spa_old");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-sqi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-srp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-srp_latn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-swa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-swe");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-syr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tgk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tha");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tir");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tur");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-uig");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ukr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-urd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-uzb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-uzb_cyrl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-vie");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-yid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tesseract-osd");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/CentOS Linux-8", "Host/OS/Debian Linux-12", "Host/OS/Debian Linux-13", "Host/OS/Debian Linux-14", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "libtesseract-dev"},
          {"reference": "libtesseract5"},
          {"reference": "tesseract-ocr"},
          {"reference": "tesseract-ocr-all"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "libtesseract-dev"},
          {"reference": "libtesseract5"},
          {"reference": "tesseract-ocr"},
          {"reference": "tesseract-ocr-all"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "libtesseract-dev"},
          {"reference": "libtesseract5"},
          {"reference": "tesseract-ocr"},
          {"reference": "tesseract-ocr-all"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "tesseract"},
          {"reference": "tesseract-devel"},
          {"reference": "tesseract-langpack-afr"},
          {"reference": "tesseract-langpack-amh"},
          {"reference": "tesseract-langpack-ara"},
          {"reference": "tesseract-langpack-asm"},
          {"reference": "tesseract-langpack-aze"},
          {"reference": "tesseract-langpack-aze_cyrl"},
          {"reference": "tesseract-langpack-bel"},
          {"reference": "tesseract-langpack-ben"},
          {"reference": "tesseract-langpack-bod"},
          {"reference": "tesseract-langpack-bos"},
          {"reference": "tesseract-langpack-bul"},
          {"reference": "tesseract-langpack-cat"},
          {"reference": "tesseract-langpack-ceb"},
          {"reference": "tesseract-langpack-ces"},
          {"reference": "tesseract-langpack-chi_sim"},
          {"reference": "tesseract-langpack-chi_tra"},
          {"reference": "tesseract-langpack-chr"},
          {"reference": "tesseract-langpack-cym"},
          {"reference": "tesseract-langpack-dan"},
          {"reference": "tesseract-langpack-deu"},
          {"reference": "tesseract-langpack-dzo"},
          {"reference": "tesseract-langpack-ell"},
          {"reference": "tesseract-langpack-enm"},
          {"reference": "tesseract-langpack-epo"},
          {"reference": "tesseract-langpack-est"},
          {"reference": "tesseract-langpack-eus"},
          {"reference": "tesseract-langpack-fas"},
          {"reference": "tesseract-langpack-fin"},
          {"reference": "tesseract-langpack-fra"},
          {"reference": "tesseract-langpack-frk"},
          {"reference": "tesseract-langpack-frm"},
          {"reference": "tesseract-langpack-gle"},
          {"reference": "tesseract-langpack-glg"},
          {"reference": "tesseract-langpack-grc"},
          {"reference": "tesseract-langpack-guj"},
          {"reference": "tesseract-langpack-hat"},
          {"reference": "tesseract-langpack-heb"},
          {"reference": "tesseract-langpack-hin"},
          {"reference": "tesseract-langpack-hrv"},
          {"reference": "tesseract-langpack-hun"},
          {"reference": "tesseract-langpack-iku"},
          {"reference": "tesseract-langpack-ind"},
          {"reference": "tesseract-langpack-isl"},
          {"reference": "tesseract-langpack-ita"},
          {"reference": "tesseract-langpack-ita_old"},
          {"reference": "tesseract-langpack-jav"},
          {"reference": "tesseract-langpack-jpn"},
          {"reference": "tesseract-langpack-kan"},
          {"reference": "tesseract-langpack-kat"},
          {"reference": "tesseract-langpack-kat_old"},
          {"reference": "tesseract-langpack-kaz"},
          {"reference": "tesseract-langpack-khm"},
          {"reference": "tesseract-langpack-kir"},
          {"reference": "tesseract-langpack-kor"},
          {"reference": "tesseract-langpack-lao"},
          {"reference": "tesseract-langpack-lat"},
          {"reference": "tesseract-langpack-lav"},
          {"reference": "tesseract-langpack-lit"},
          {"reference": "tesseract-langpack-mal"},
          {"reference": "tesseract-langpack-mar"},
          {"reference": "tesseract-langpack-mkd"},
          {"reference": "tesseract-langpack-mlt"},
          {"reference": "tesseract-langpack-msa"},
          {"reference": "tesseract-langpack-mya"},
          {"reference": "tesseract-langpack-nep"},
          {"reference": "tesseract-langpack-nld"},
          {"reference": "tesseract-langpack-nor"},
          {"reference": "tesseract-langpack-ori"},
          {"reference": "tesseract-langpack-pan"},
          {"reference": "tesseract-langpack-pol"},
          {"reference": "tesseract-langpack-por"},
          {"reference": "tesseract-langpack-pus"},
          {"reference": "tesseract-langpack-ron"},
          {"reference": "tesseract-langpack-rus"},
          {"reference": "tesseract-langpack-san"},
          {"reference": "tesseract-langpack-sin"},
          {"reference": "tesseract-langpack-slk"},
          {"reference": "tesseract-langpack-slv"},
          {"reference": "tesseract-langpack-spa"},
          {"reference": "tesseract-langpack-spa_old"},
          {"reference": "tesseract-langpack-sqi"},
          {"reference": "tesseract-langpack-srp"},
          {"reference": "tesseract-langpack-srp_latn"},
          {"reference": "tesseract-langpack-swa"},
          {"reference": "tesseract-langpack-swe"},
          {"reference": "tesseract-langpack-syr"},
          {"reference": "tesseract-langpack-tam"},
          {"reference": "tesseract-langpack-tel"},
          {"reference": "tesseract-langpack-tgk"},
          {"reference": "tesseract-langpack-tha"},
          {"reference": "tesseract-langpack-tir"},
          {"reference": "tesseract-langpack-tur"},
          {"reference": "tesseract-langpack-uig"},
          {"reference": "tesseract-langpack-ukr"},
          {"reference": "tesseract-langpack-urd"},
          {"reference": "tesseract-langpack-uzb"},
          {"reference": "tesseract-langpack-uzb_cyrl"},
          {"reference": "tesseract-langpack-vie"},
          {"reference": "tesseract-langpack-yid"},
          {"reference": "tesseract-osd"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "tesseract"},
          {"reference": "tesseract-devel"},
          {"reference": "tesseract-langpack-afr"},
          {"reference": "tesseract-langpack-amh"},
          {"reference": "tesseract-langpack-ara"},
          {"reference": "tesseract-langpack-asm"},
          {"reference": "tesseract-langpack-aze"},
          {"reference": "tesseract-langpack-aze_cyrl"},
          {"reference": "tesseract-langpack-bel"},
          {"reference": "tesseract-langpack-ben"},
          {"reference": "tesseract-langpack-bod"},
          {"reference": "tesseract-langpack-bos"},
          {"reference": "tesseract-langpack-bul"},
          {"reference": "tesseract-langpack-cat"},
          {"reference": "tesseract-langpack-ceb"},
          {"reference": "tesseract-langpack-ces"},
          {"reference": "tesseract-langpack-chi_sim"},
          {"reference": "tesseract-langpack-chi_tra"},
          {"reference": "tesseract-langpack-chr"},
          {"reference": "tesseract-langpack-cym"},
          {"reference": "tesseract-langpack-dan"},
          {"reference": "tesseract-langpack-deu"},
          {"reference": "tesseract-langpack-dzo"},
          {"reference": "tesseract-langpack-ell"},
          {"reference": "tesseract-langpack-enm"},
          {"reference": "tesseract-langpack-epo"},
          {"reference": "tesseract-langpack-est"},
          {"reference": "tesseract-langpack-eus"},
          {"reference": "tesseract-langpack-fas"},
          {"reference": "tesseract-langpack-fin"},
          {"reference": "tesseract-langpack-fra"},
          {"reference": "tesseract-langpack-frk"},
          {"reference": "tesseract-langpack-frm"},
          {"reference": "tesseract-langpack-gle"},
          {"reference": "tesseract-langpack-glg"},
          {"reference": "tesseract-langpack-grc"},
          {"reference": "tesseract-langpack-guj"},
          {"reference": "tesseract-langpack-hat"},
          {"reference": "tesseract-langpack-heb"},
          {"reference": "tesseract-langpack-hin"},
          {"reference": "tesseract-langpack-hrv"},
          {"reference": "tesseract-langpack-hun"},
          {"reference": "tesseract-langpack-iku"},
          {"reference": "tesseract-langpack-ind"},
          {"reference": "tesseract-langpack-isl"},
          {"reference": "tesseract-langpack-ita"},
          {"reference": "tesseract-langpack-ita_old"},
          {"reference": "tesseract-langpack-jav"},
          {"reference": "tesseract-langpack-jpn"},
          {"reference": "tesseract-langpack-kan"},
          {"reference": "tesseract-langpack-kat"},
          {"reference": "tesseract-langpack-kat_old"},
          {"reference": "tesseract-langpack-kaz"},
          {"reference": "tesseract-langpack-khm"},
          {"reference": "tesseract-langpack-kir"},
          {"reference": "tesseract-langpack-kor"},
          {"reference": "tesseract-langpack-lao"},
          {"reference": "tesseract-langpack-lat"},
          {"reference": "tesseract-langpack-lav"},
          {"reference": "tesseract-langpack-lit"},
          {"reference": "tesseract-langpack-mal"},
          {"reference": "tesseract-langpack-mar"},
          {"reference": "tesseract-langpack-mkd"},
          {"reference": "tesseract-langpack-mlt"},
          {"reference": "tesseract-langpack-msa"},
          {"reference": "tesseract-langpack-mya"},
          {"reference": "tesseract-langpack-nep"},
          {"reference": "tesseract-langpack-nld"},
          {"reference": "tesseract-langpack-nor"},
          {"reference": "tesseract-langpack-ori"},
          {"reference": "tesseract-langpack-pan"},
          {"reference": "tesseract-langpack-pol"},
          {"reference": "tesseract-langpack-por"},
          {"reference": "tesseract-langpack-pus"},
          {"reference": "tesseract-langpack-ron"},
          {"reference": "tesseract-langpack-rus"},
          {"reference": "tesseract-langpack-san"},
          {"reference": "tesseract-langpack-sin"},
          {"reference": "tesseract-langpack-slk"},
          {"reference": "tesseract-langpack-slv"},
          {"reference": "tesseract-langpack-spa"},
          {"reference": "tesseract-langpack-spa_old"},
          {"reference": "tesseract-langpack-sqi"},
          {"reference": "tesseract-langpack-srp"},
          {"reference": "tesseract-langpack-srp_latn"},
          {"reference": "tesseract-langpack-swa"},
          {"reference": "tesseract-langpack-swe"},
          {"reference": "tesseract-langpack-syr"},
          {"reference": "tesseract-langpack-tam"},
          {"reference": "tesseract-langpack-tel"},
          {"reference": "tesseract-langpack-tgk"},
          {"reference": "tesseract-langpack-tha"},
          {"reference": "tesseract-langpack-tir"},
          {"reference": "tesseract-langpack-tur"},
          {"reference": "tesseract-langpack-uig"},
          {"reference": "tesseract-langpack-ukr"},
          {"reference": "tesseract-langpack-urd"},
          {"reference": "tesseract-langpack-uzb"},
          {"reference": "tesseract-langpack-uzb_cyrl"},
          {"reference": "tesseract-langpack-vie"},
          {"reference": "tesseract-langpack-yid"},
          {"reference": "tesseract-osd"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "tesseract"},
          {"reference": "tesseract-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "tesseract"},
          {"reference": "tesseract-devel"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}

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