CVE Catalog

CVE-2026-5260

HighCVSS 8.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.73%

52th percentile - higher than 52% of all known CVEs

Summary

The libgnutls library contains a short heap overread vulnerability during RSA key exchange using a PKCS#11 token. By sending a very short premaster secret, an attacker can cause information disclosure.

Risk Assessment

A remote attacker can read data from server memory, potentially leaking sensitive information such as private keys.

Recommendation

Update libgnutls to a version containing a fix for the heap overread vulnerability.

Related vulnerabilities

Original NVD description (English source)

A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS