Process crash via unchecked GG packet length
Published May 24, 2026 · Updated May 24, 2026
Heap-based buffer overflow in Ettercap 0.8.0 through 0.8.3 allows remote attackers to crash the process via crafted GG traffic. FUNC_DECODER in src/dissectors/ec_gg.c copies a packet-controlled gg->len value into the 71-byte tbuf2 heap buffer without an upper bound, then writes a terminator at the derived offset. Ettercap must be actively sniffing TCP port 8074 traffic, with the attacker on the same network segment or in a man-in-the-middle position; the demonstrated consequence is memory corruption and process termination.
Summary
What happened
Heap-based buffer overflow in Ettercap 0.8.0 through 0.8.3 allows remote attackers to crash the process via crafted GG traffic. FUNC_DECODER in src/dissectors/ec_gg.c copies a packet-controlled gg->len value into the 71-byte tbuf2 heap buffer without an upper bound, then writes a terminator at the derived offset. Ettercap must be actively sniffing TCP port 8074 traffic, with the attacker on the same network segment or in a man-in-the-middle position; the demonstrated consequence is memory corruption and process termination.
The record
- CVE
- CVE-2026-9365
- Published
- May 24, 2026
- Updated
- May 24, 2026
- Vendor
- Ettercap Project
- Product
- Ettercap
- Classifications
- CWE-122, CWE-119, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 24, 2026CVE publishedPublication date reported by the CVE source.
- May 24, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.8.0
- Affected versionversion=0.8.1
- Affected versionversion=0.8.2
- Affected versionversion=0.8.3
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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