Out-of-Bounds Read Vulnerability in Ettercap by Versatile Network Solutions
CVE-2026-125403
7.2HIGH
What is CVE-2026-125403?
Ettercap versions up to 0.8.4.1 are susceptible to an out-of-bounds read and size_t underflow vulnerability. This flaw occurs in the sslw_remove_sts function within src/ec_sslwrap.c, stemming from improper management of an outdated length and an unchecked memmem() result during the processing of Strict-Transport-Security headers. Attackers can exploit this vulnerability via malicious HTTPS servers, which can lead to out-of-bounds reads and potentially corrupt memory in the Ettercap process that typically runs with root privileges.
Affected Version(s)
ettercap 0 <= 0.8.4.1
References
CVSS V4
Score:
7.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None
Timeline
Vulnerability published
Vulnerability Reserved
Credit
Adiel Sol, Arad Inbar, Erez Cohen, Nir Somech, Ben Grinberg, Daniel Lubel, Shir Sadon (DREAM Security Research Team)
Emilio Escobar