CVE-2026-18839: Popt-devel: popt-static: size_t underflow in singleoptionhelp

Overview

Severity

Low (CVSS 2.2)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-07

Last Updated

2026-09-13

EPSS Score

0.08% (percentile: 0.3%)

Affected Products (3)

Other

• 21597-17084
• 21845-17084
• 21663-17084

Security Updates (1)

• Security Update

Revision History

• 2026-08-07: Information published.
• 2026-08-09: Information published.
• 2026-08-10: Information published.
• 2026-09-09: Information published.
• 2026-09-13: Information published.