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CVE-2026-48860: Distribution-over-TLS LAN allowlist silently bypassed due to sockname/peername confusion in inet_tls_dist

mediumCVSS 6.5CVE-2026-48860

CSIRTS triage

vendor: Linuxproduct: inet_tls_distAuthentication bypass
What
The distribution-over-TLS LAN allowlist is silently bypassed due to sockname/peername confusion.
Who is affected
Deployments using inet_tls_dist are affected.
Urgency
Remediation is necessary due to medium severity, with no current exploitation reported.
Action
Apply the patch for CVE-2026-48860.

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-2026-48860

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-2026-48860coverage & exploitation statusNVD · CVE.org

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