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Vulnerability details

CVE-2026-5260

Red Hat OpenShift Container Platform 5

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

CVSS 3.1
8.2High

Official 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.

CVSS scores

ScoreVersionSourceVector
8.2High 3.1 CVEProject cvelistV5 (CNA) (redhat) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

VendorProductVersionsSource
Red Hat Red Hat OpenShift Container Platform 5 All CVEProject cvelistV5 (CNA)

References and advisories

38
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Details

Published
2026-05-27
Last updated
2026-11-06
State
Published
Assigner (CNA)
redhat

Exploit prediction (EPSS)

0.76%
Probability of exploitation in 30 days
55.7%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
Yes
Exploitation
None
Technical impact
Partial

Weaknesses (CWE)

  • CWE-126
    Buffer Over-read