CVE-2026-125403 (GCVE-0-2026-125403)

Vulnerability from cvelistv5 – Published: 2026-11-09 23:28 – Updated: 2026-11-09 23:28
VLAI
Title
Ettercap through 0.8.4.1 Out-of-Bounds Read via sslw_remove_sts
Summary
Ettercap through 0.8.4.1 contains an out-of-bounds read and size_t underflow vulnerability in sslw_remove_sts() in src/ec_sslwrap.c, caused by a stale length and an unchecked memmem() result when stripping Strict-Transport-Security headers. A malicious HTTPS server whose response passes through Ettercap's SSL interception can trigger out-of-bounds reads and memory corruption in the Ettercap process, which normally runs as root.
Severity
7.2 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
Ettercap ettercap Affected: 0 , ≤ 0.8.4.1 (custom)
    cpe:2.3:a:ettercap-project:ettercap:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-11-06 00:00
Credits
Adiel Sol, Arad Inbar, Erez Cohen, Nir Somech, Ben Grinberg, Daniel Lubel, Shir Sadon (DREAM Security Research Team) Emilio Escobar
Show details on NVD website
To clipboard 

{
  "containers": {
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        {
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          "packageURL": "pkg:github/Ettercap/ettercap",
          "product": "ettercap",
          "repo": "https://github.com/Ettercap/ettercap",
          "vendor": "Ettercap",
          "versions": [
            {
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              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:ettercap-project:ettercap:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "0.8.4.1",
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        },
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          "type": "remediation developer",
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        }
      ],
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        {
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        }
      ],
      "metrics": [
        {
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            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
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      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2026-11-09T23:28:04.934Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-hq2w-pg4m-6w63)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/Ettercap/ettercap/security/advisories/GHSA-hq2w-pg4m-6w63"
        },
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          "url": "https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98"
        },
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          "url": "https://github.com/Ettercap/ettercap/pull/1330"
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          "url": "https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.c#L1294-L1322"
        },
        {
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          "tags": [
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          "url": "https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-out-of-bounds-read-via-sslw-remove-sts"
        }
      ],
      "title": "Ettercap through 0.8.4.1 Out-of-Bounds Read via sslw_remove_sts",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-125403",
    "datePublished": "2026-11-09T23:28:04.934Z",
    "dateReserved": "2026-11-09T22:03:16.233Z",
    "dateUpdated": "2026-11-09T23:28:04.934Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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