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CVE-2026-52931: batman-adv: tp_meter: avoid use of uninit sender vars

criticalCVSS 9.8CVE-2026-52931

CSIRTS triage

vendor: nullproduct: nullOther
What
Avoid using uninitialized sender variables in batman-adv to prevent issues.
Who is affected
Users of batman-adv are affected by this vulnerability.
Urgency
Critical urgency for remediation due to the high severity of potential exploitation.
Action
Implement the fix to avoid using uninitialized sender variables.

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

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
critical — CVSS 9.8
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52931

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-2026-52931coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for batman-adv

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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