Ettercap through 0.8.4.1 contains an out-of-bounds read vulnerability in Parse_NTLM_Auth() in src/dissectors/ec_http.c due to unvalidated NTLM message offsets. Attackers can send a crafted HTTP Authorization header observed by Ettercap to read beyond the buffer, disclosing memory or crashing the process.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Ettercap ettercap unaffected
Version Status Constraints
0 affected ≤ 0.8.4.1

No data.

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Project Subscriptions

Vendors Products
Ettercap-project Subscribe
Ettercap Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/dissectors/ec_http.c#L505-L512 cve-icon cve-icon
https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98 cve-icon cve-icon
https://github.com/Ettercap/ettercap/pull/1330 cve-icon cve-icon
https://github.com/Ettercap/ettercap/security/advisories/GHSA-jw9q-j2rm-94j2 cve-icon cve-icon
https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-out-of-bounds-read-via-http-ntlm-authentication-parsing cve-icon cve-icon
History

Mon, 09 Nov 2026 23:45:00 +0000

Type Values Removed Values Added
Description Ettercap through 0.8.4.1 contains an out-of-bounds read vulnerability in Parse_NTLM_Auth() in src/dissectors/ec_http.c due to unvalidated NTLM message offsets. Attackers can send a crafted HTTP Authorization header observed by Ettercap to read beyond the buffer, disclosing memory or crashing the process.
Title Ettercap through 0.8.4.1 Out-of-Bounds Read via HTTP NTLM Authentication Parsing
First Time appeared Ettercap-project
Ettercap-project ettercap
Weaknesses CWE-125
CPEs cpe:2.3:a:ettercap-project:ettercap:*:*:*:*:*:*:*:*
Vendors & Products Ettercap-project
Ettercap-project ettercap
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-09T23:28:06.346Z

Reserved: 2026-11-09T22:03:16.989Z

Link: CVE-2026-125405

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T00:17:15.323

Modified: 2026-11-10T00:17:15.323

Link: CVE-2026-125405

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses