CVE-2026-56389: Arbitrary Command Execution in GNU Bison

Overview

Severity

N/A

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-08-07

Last Updated

2026-09-13

EPSS Score

0.16% (percentile: 5.4%)

Affected Products (2)

Other

• 20154-17084
• 21844-17084

Security Updates (1)

• Security Update

Revision History

• 2026-08-07: Information published.
• 2026-08-14: Information published.
• 2026-08-14: Information published.
• 2026-08-14: Information published.
• 2026-09-09: Information published.
• 2026-09-13: Information published.