CVE-2026-18739 LOW

CVE-2026-18739: Popt-devel: popt-static: off-by-one in poptstuffargs

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-787
Published August 4, 2026
Last update August 4, 2026

CVSS base score

2.5/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption could potentially enable a local attacker to execute arbitrary code if the host application then unsafely processes the altered data.

Key dates

02Disclosure timeline

August 4, 2026 CVE published
August 4, 2026 Record updated