CVE-2021-29630: Freebsd

High severity, CVSS 8.1. EPSS: 1.6% chance of exploitation in the next 30 days.

In FreeBSD 13.0-STABLE before n246938-0729ba2f49c9, 12.2-STABLE before r370383, 11.4-STABLE before r370381, 13.0-RELEASE before p4, 12.2-RELEASE before p10, and 11.4-RELEASE before p13, the ggatec daemon does not validate the size of a response before writing it to a fixed-sized buffer allowing a malicious attacker in a privileged network position to overwrite the stack of ggatec and potentially execute arbitrary code.

Affected products

• Freebsd Freebsd: version 11.4 only; version 12.2 only; version 13.0 only

Published 2021-08-30. Last modified 2026-06-17.