Adobe InCopy < 20.5.3 / 21.0 < 21.3.0 Multiple Vulnerabilities Arbitrary code execution (APSB26-33)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(306385);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/20");

  script_cve_id("CVE-2026-27287", "CVE-2026-34631");
  script_xref(name:"IAVA", value:"2026-A-0333");

  script_name(english:"Adobe InCopy < 20.5.3 / 21.0 < 21.3.0 Multiple Vulnerabilities Arbitrary code execution (APSB26-33)");

  script_set_attribute(attribute:"synopsis", value:
"The Adobe InCopy instance installed on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Adobe InCopy installed on the remote host is prior to 20.5.3, 21.3.0. It is, therefore, affected by
multiple vulnerabilities as referenced in the APSB26-33 advisory.

  - InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds write vulnerability that could
    result in arbitrary code execution in the context of the current user. Exploitation of this issue requires
    user interaction in that a victim must open a malicious file. (CVE-2026-34631)

  - InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds read vulnerability when parsing
    a crafted file, which could result in a read past the end of an allocated memory structure. An attacker
    could leverage this vulnerability to execute code in the context of the current user. Exploitation of this
    issue requires user interaction in that a victim must open a malicious file. (CVE-2026-27287)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://helpx.adobe.com/security/products/incopy/apsb26-33.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Adobe InCopy version 20.5.3, 21.3.0 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-34631");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(125, 787);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:adobe:incopy");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("adobe_incopy_win_installed.nbin", "adobe_incopy_mac_installed.nbin");
  script_require_keys("installed_sw/Adobe InCopy");

  exit(0);
}

include('vcf.inc');

var app = 'Adobe InCopy';
var win_local;
if (!empty_or_null(get_kb_item('SMB/Registry/Enumerated')))
  win_local = TRUE;
else
  win_local = FALSE;

var app_info = vcf::get_app_info(app:app, win_local:win_local);

var constraints = [
  { 'fixed_version' : '20.5.3' },
  { 'min_version' : '21.0', 'fixed_version' : '21.3.0' }
];

vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);