High severity8.1NVD Advisory· Published Nov 10, 2026
CVE-2026-125402
CVE-2026-125402
Description
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.
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Affected products
1Patches
Vulnerability mechanics
References
5- github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.cnvd
- github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98nvd
- github.com/Ettercap/ettercap/pull/1330nvd
- github.com/Ettercap/ettercap/security/advisories/GHSA-v48w-7cvh-c7f4nvd
- www.vulncheck.com/advisories/ettercap-through-0.8.4.1-heap-out-of-bounds-read-via-tls-sni-parsingnvd
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