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CVE-2026-56123

🗓️ 25 Jun 2026 15:43:19Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 107 Views

Socat heap-based overflow in SOCKS five reply parser allows overflow via signed domain name length during setup.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-56123
25 Jun 202615:43
–attackerkb
alpinelinux
AlpineLinux
CVE-2026-56123
25 Jun 202615:43
–alpinelinux
circl
Circl
CVE-2026-56123
29 Jun 202600:37
–circl
cvelist
Cvelist
CVE-2026-56123 socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser
25 Jun 202615:43
–cvelist
debiancve
Debian CVE
CVE-2026-56123
25 Jun 202615:43
–debiancve
euvd
EUVD
EUVD-2026-39455
25 Jun 202615:43
–euvd
nessus
Tenable Nessus
Fedora 43 : socat (2026-232ffc1325)
22 Oct 202600:00
–nessus
nessus
Tenable Nessus
Fedora 46 : socat (2026-3bb7b0bc5a)
7 Oct 202600:00
–nessus
nessus
Tenable Nessus
Fedora 44 : socat (2026-4172dae890)
23 Oct 202600:00
–nessus
nessus
Tenable Nessus
Ubuntu 24.04 LTS / 26.04 LTS : socat vulnerabilities (USN-8511-1)
7 Jul 202600:00
–nessus
Rows per page
NVD
Vulners
CNA
Node
dest-unreachsocatRange1.8.0.0–1.8.1.2
[
  {
    "defaultStatus": "affected",
    "vendor": "socat",
    "product": "socat",
    "repo": "https://repo.or.cz/socat.git",
    "versions": [
      {
        "status": "affected",
        "version": "1.8.0.0",
        "versionType": "custom",
        "lessThan": "1.8.1.2"
      }
    ]
  }
]

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14 Jul 2026 21:34Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.18.1 - 9.8
CVSS 49.2
EPSS0.00314
SSVC
107