CVE-2026-53214: ipv6: Fix a potential NPD in cleanup_prefix_route()

mediumCVSS 5.5CVE-2026-53214

CSIRTS triage

Other

What: There is a potential NPD (Null Pointer Dereference) in the cleanup_prefix_route function.
Who is affected: Deployments using the relevant networking components are affected.
Urgency: Remediation is medium urgency due to the moderate severity of the vulnerability.
Action: Apply the fix for the potential NPD in cleanup_prefix_route.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53214

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-532140.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53214	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownMultiple vulnerabilities in Microsoft Azure Linux (June 29, 2026)cert-fr-avis

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