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CVE-2026-9539: libslirp TCP URG OOB Read Information Leak

mediumCVSS 6.5CVE-2026-9539

CSIRTS triage

vendor: nullproduct: libslirpInformation disclosure
What
A TCP URG OOB read could lead to an information leak.
Who is affected
Users of libslirp.
Urgency
Remediation is important to prevent potential information leaks.
Action
Update libslirp 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 6.5
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-9539

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-2026-9539coverage & exploitation statusNVD · CVE.org

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