HIGH

CVE-2022-27881

CVSS v3

7.5

HIGH

EPSS Score

1.9 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2022-27881 yet.

Full record on NVD

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.

Technical details

Published: 2022-03-25

Frequently asked questions

What is CVE-2022-27881?

Is CVE-2022-27881 actively exploited?

Active exploitation of CVE-2022-27881 has not been confirmed. Its EPSS score was 1.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-27881?

CVE-2022-27881 has a CVSS v3 base score of 7.5 (HIGH severity).

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