CVE-2021-29630

Name: CVE-2021-29630
Creator: NVD / NIST
Published: 2021-08-30T19:15:08.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.58%

Last modified Jun 17, 2026

CVE-2021-29630 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 1.58% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.58%

72.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	11.4
Freebsd	Freebsd	12.2
Freebsd	Freebsd	13.0

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-21:14.ggatec.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210923-0005/Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:14.ggatec.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210923-0005/Third Party Advisory

Timeline

Published: Aug 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29630?

How severe is CVE-2021-29630?

CVE-2021-29630 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.58% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29630?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-29630?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST