Vulnerabilities CVE-2026-5260

CVE-2026-5260

High

Open

TLP:CLEAR

Gnutls: gnutls: information disclosure via heap overread in rsa key exchange

NVD CVE.org

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Description

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.

Details

CVSS Score: 8.2
EPSS Score ⓘ: 0.73%

51.2th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Confidence: 90%
Published: May 26, 2026
Last Modified: Aug 21, 2026

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