Ettercap through 0.8.4.1 contains a heap buffer overflow vulnerability in gg_get_version() in src/dissectors/ec_gg.c that writes up to 44 bytes into a 30-byte allocation. Remote attackers can send Gadu-Gadu traffic on TCP port 8074 with a crafted version field through a monitored network to corrupt heap memory in the Ettercap process, which normally runs as root.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

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 None

Integrity Impact High

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.

No data.

No data.

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_gg.c#L599 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-vrjv-f8gv-2h35 cve-icon cve-icon
https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-heap-buffer-overflow-via-gadu-gadu-dissector 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 a heap buffer overflow vulnerability in gg_get_version() in src/dissectors/ec_gg.c that writes up to 44 bytes into a 30-byte allocation. Remote attackers can send Gadu-Gadu traffic on TCP port 8074 with a crafted version field through a monitored network to corrupt heap memory in the Ettercap process, which normally runs as root.
Title Ettercap through 0.8.4.1 Heap Buffer Overflow via Gadu-Gadu Dissector
First Time appeared Ettercap-project
Ettercap-project ettercap
Weaknesses CWE-122
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:N/I:H/A:H'}

cvssV4_0

{'score': 7.2, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-09T23:28:03.530Z

Reserved: 2026-11-09T22:03:15.478Z

Link: CVE-2026-125401

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T00:17:14.540

Modified: 2026-11-10T00:17:14.540

Link: CVE-2026-125401

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses