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CVE-2026-52916: batman-adv: frag: disallow unicast fragment in fragment

mediumCVSS 5.5CVE-2026-52916

CSIRTS triage

vendor: nullproduct: batman-advOther
What
The vulnerability disallows unicast fragments in the batman-adv protocol.
Who is affected
Deployments using batman-adv are affected.
Urgency
Remediation is medium urgency as the severity is rated as medium with a CVSS score of 5.5.
Action
Update to the latest version of batman-adv.

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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-2026-52916

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-52916coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

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