CVE-2022-27882

HIGHNVD 7.57.5—

7.5

slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a crafted IPv6 router advertisement. NOTE: privilege separation and pledge can prevent exploitation.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 76.1%
KEV: Not listed

Published

March 25, 2022

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html
cve@mitrehttps://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig
cve@mitrehttps://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig
cve@mitrehttps://security.netapp.com/advisory/ntap-20220506-0005/
af854a3a-2127-422b-91ae-364da2661108https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html
af854a3a-2127-422b-91ae-364da2661108https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig
af854a3a-2127-422b-91ae-364da2661108https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220506-0005/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-681

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
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2026-06-01 13:50 UTCepss_batch
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2026-05-31 22:29 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
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2026-05-27 13:39 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 01:04 UTCEG score recompute

Frequently asked(5)

What is CVE-2022-27882?

CVE-2022-27882 is a high vulnerability published on March 25, 2022. slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a crafted IPv6 router advertisement. NOTE: privilege separation and pledge can prevent exploitation.

When was CVE-2022-27882 disclosed?

CVE-2022-27882 was first published in the National Vulnerability Database on March 25, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-27882 actively exploited?

CVE-2022-27882 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-27882?

CVE-2022-27882 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2022-27882?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-27882, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2022-27882

📅 Published

🔄 Last Modified

🔗 References (8)