What’s Vulnerable › Vulnerabilities

CVE-2022-27881

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-03-25 · updated 2026-06-17
• Weakness: CWE-120

Description

engine.c in slaacd in OpenBSD 6.9 and 7.0 before 2022-02-21 has a buffer overflow triggerable by an IPv6 router advertisement with more than seven nameservers. NOTE: privilege separation and pledge can prevent exploitation.

Affected products

• OpenBSD: 6.9, 7.0

References

• https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sig
• https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sig
• https://security.netapp.com/advisory/ntap-20220506-0005/
• https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sig
• https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sig
• https://security.netapp.com/advisory/ntap-20220506-0005/

Get alerted when CVE-2022-27881 or the next vulnerability affects your stack