Ettercap through 0.8.4.1 Heap Buffer Overflow via Gadu-Gadu Dissector
- Exploited
- No known exploitation
- Fix
- Fix or patch referenced
- Who is exposed
- Not reported
Do first: Apply the patch listed under Evidence.
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 7/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure?/25Unknown. Advisories don't say whether default setups are affected
- Reach?/20Unknown. No tracked technology or package matched
- Severity7.2/10CVSS 7.2
- No patch0/5No signal
What would change the score
- Would score about 62 if added to CISA KEV
- Would score about 57 if CISA's SSVC rates exploitation active
- Would score about 29 if advisories confirm default setups are exposed
What to do
Apply the patch listed under Evidence.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Ettercap ettercap
through 0.8.4.1
Evidence 5
- Advisory
- Patch
- Patch
- Repository
- Link
Corrections
None so far.
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Questions about CVE-2026-125401
Is CVE-2026-125401 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
A flaw in Ettercap's Gadu-Gadu dissector lets specially crafted network traffic corrupt heap memory in the Ettercap process. Ettercap normally runs as root, so the corruption happens in a privileged process.Source: vulncheck.com
Which versions are affected by CVE-2026-125401?
ettercap: through 0.8.4.1.Source: cve.now feed data
Am I affected, and how do I check?
Ettercap version 0.8.4.1 and earlier is affected. The bug only applies when Gadu-Gadu traffic on TCP port 8074 is processed by the Gadu-Gadu dissector and crosses a network that Ettercap monitors; check your installed version with ettercap --version.Source: vulncheck.com
How do I fix CVE-2026-125401?
No fixed release is listed in the checked facts, so no upgrade target can be named from them. Check the Ettercap project or your distribution for a patched version.Source: vulncheck.com