CVE-2026-5260HIGH 8.2EPSS p50.7%

CVE-2026-5260CVE-2026-5260

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.

Scoring

CVSS 3.18.2 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS0.77% probability of exploitation · percentile 50.7% · 2026-06-19T12:03:05Z
Published2026-05-26
Last modified2026-06-02

Underlying weaknesses· 1

CWE-1284

References

  1. https://access.redhat.com/errata/RHSA-2026:20611
  2. https://access.redhat.com/security/cve/CVE-2026-5260
  3. https://bugzilla.redhat.com/show_bug.cgi?id=2467450

1

TypeTargetConfidenceTier
WeaknessImproper Validation of Specified Quantity in Inputcwe-12840%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.