CVE-2026-42014

Description

A flaw was found in GnuTLS. The `gnutls_pkcs11_token_set_pin` function, used for changing the Security Officer PIN, can lead to a use-after-free vulnerability. This occurs when an attacker attempts to change the PIN with a NULL old PIN for a token that lacks a protected authentication path.

CVSS v3.1 Score

6.6

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

EPSS — Exploit Prediction

0.0015

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-825 CWE-825

References

Other References

https://access.redhat.com/errata/RHSA-2026:20611 https://access.redhat.com/errata/RHSA-2026:20612 https://access.redhat.com/errata/RHSA-2026:20613 https://access.redhat.com/errata/RHSA-2026:26319 https://access.redhat.com/errata/RHSA-2026:26409 https://access.redhat.com/security/cve/CVE-2026-42014 https://bugzilla.redhat.com/show_bug.cgi?id=2467451 https://gitlab.com/gnutls/gnutls/-/issues/1766 https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-9

Frequently Asked Questions

What is CVE-2026-42014? +

A flaw was found in GnuTLS. The `gnutls_pkcs11_token_set_pin` function, used for changing the Security Officer PIN, can lead to a use-after-free vulnerability. This occurs when an attacker attempts to change the PIN with a NULL old PIN for a token that lacks a protected authentication path. It has a CVSS v3.1 base score of 6.6 (MEDIUM).

How severe is CVE-2026-42014? +

CVE-2026-42014 has a CVSS v3.1 score of 6.6 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0015, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-42014? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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