CVE-2026-12969: Dnsmasq: dnsmasq: out-of-bounds read in find_soa() due to missing extrabytes validation

mediumCVSS 5.3CVE-2026-12969

CSIRTS triage

vendor: Dnsmasq product: DnsmasqOther

What: An out-of-bounds read occurs in find_soa() due to missing validation of extrabytes.
Who is affected: Deployments of Dnsmasq are affected by this vulnerability.
Urgency: Remediation is medium urgency due to the medium severity rating.
Action: Update Dnsmasq to the latest version.

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: medium — CVSS 5.3
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-12969

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-2026-129690.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-12969	coverage & exploitation status	NVD · CVE.org

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