CVE-2026-42014: Gnutls: fix use-after-free in gnutls_pkcs11_token_set_pin

mediumCVSS 6.6CVE-2026-42014

CSIRTS triage

vendor: GnuTLS product: GnuTLSOther

What: This vulnerability is a use-after-free issue in gnutls_pkcs11_token_set_pin.
Who is affected: Deployments of GnuTLS are affected by this vulnerability.
Urgency: Remediation is important due to a medium severity rating and potential exploitation.
Action: Update to the latest version of GnuTLS to mitigate this issue.

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 6.6
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42014

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-2026-420140.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-42014	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[UPDATE] [high] GnuTLS: Multiple vulnerabilitiescert-bund

Recent advisories for Gnutls

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.

high[UPDATE] [high] GnuTLS: Multiple vulnerabilitiescert-bund · 2026-07-10
medium[UPDATE] [medium] GnuTLS: Multiple vulnerabilities allow Denial of Servicecert-bund · 2026-07-10
medium[UPDATE] [medium] GnuTLS: Vulnerability allows denial of servicecert-bund · 2026-07-07
medium[UPDATE] [medium] GnuTLS: Multiple vulnerabilitiescert-bund · 2026-07-07
low[UPDATE] [low] GnuTLS: Vulnerability allows unspecified attackcert-bund · 2026-07-07
unknownUSN-8502-1: GnuTLS vulnerabilitiesubuntu · 2026-07-06