CVE-2026-125402

Ettercap through 0.8.4.1 Heap Out-of-Bounds Read via TLS SNI Parsing

Published Nov 9, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
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.
Title Ettercap through 0.8.4.1 Heap Out-of-Bounds Read via TLS SNI Parsing
First Time appeared Ettercap-project
Ettercap-project ettercap
Weaknesses CWE-125
CPEs cpe:2.3:a:ettercap-project:ettercap:*:*:*:*:*:*:*:*
Vendors & Products Ettercap-project
Ettercap-project ettercap
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 13, 2026, 4:14 PM
Reserved
Nov 9, 2026, 10:03 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 12:17 AM
Modified
Nov 12, 2026, 9:07 PM