CVE-2026-125402
Ettercap through 0.8.4.1 Heap Out-of-Bounds Read via TLS SNI Parsing
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
Ettercap through 0.8.4.1 contains a heap out-of-bounds read vulnerability in sslw_get_clienthello_sni() in src/ec_sslwrap.c that trusts the unchecked 16-bit SNI length field. Network-adjacent attackers can send crafted TLS ClientHello messages during SSL interception to leak up to 64 KB of heap memory upstream or crash Ettercap.
| CWE | CWE-125 |
| Vendor | ettercap |
| Product | ettercap |
| Published | Nov 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Affected Versions
Ettercap / ettercap
0 ≤ 0.8.4.1
References
github.com: https://github.com/Ettercap/ettercap/security/advisories/GHSA-v48w-7cvh-c7f4 github.com: https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98 github.com: https://github.com/Ettercap/ettercap/pull/1330 github.com: https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.c#L589-L604 vulncheck.com: https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-heap-out-of-bounds-read-via-tls-sni-parsing
Credits
Adiel Sol, Arad Inbar, Erez Cohen, Nir Somech, Ben Grinberg, Daniel Lubel, Shir Sadon (DREAM Security Research Team) Emilio Escobar