Buffer overflow in Ettercap
CVE-2026-9365
A vulnerability has been found in Ettercap up to 0.8.3. The affected element is the function FUNC_DECODER of the file src/dissectors/ec_gg.c of the component GG Dissector. The manipulation of the argument gg leads to heap-based buffer overflow. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is described as difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 0.8.4 is sufficient to fix this issue. The identifier of the patch is feeae6fa366e01a3dd9f1857ec6aae847b2ae00c. It is suggested to upgrade the affected component.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (39.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Ettercap — versions 0.8.0, 0.8.1, 0.8.2
Weakness classification (CWE)
References
- vuldb.com/vuln/365328 (technical-description, vdb-entry)
- vuldb.com/vuln/365328/cti (signature, permissions-required)
- vuldb.com/submit/813142 (third-party-advisory)
- github.com/Ettercap/ettercap/issues/1306 (issue-tracking, exploit)
- github.com/Ettercap/ettercap/pull/1307 (issue-tracking, patch)
- github.com/Ettercap/ettercap/commit/feeae6fa366e01a3dd9f1857ec6aae847b2ae00c (patch)
- github.com/Ettercap/ettercap/ (product)
Frequently asked questions
- What is CVE-2026-9365?
- CVE-2026-9365 is a medium-severity vulnerability in Ettercap, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.6/10. Published 2026-05-24.
- How severe is CVE-2026-9365?
- Medium severity. CVSS v3 base score is 5.6 out of 10.