VULNERABILITY INTELLIGENCE

CVE-2023-4255

CVSS score5.5 MEDIUM
EPSS probability0.32%
CISA KEVNot currently listed
Published2023-12-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Description

An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes, resulting in a denial of service condition.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references