CVE-2026-5419
LOWgnutls - Observable Timing Discrepancy in PKCS#7 Padding Check
Title source: llmDescription
A flaw was found in gnutls. The PKCS#7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of information disclosure.
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:20612
https://access.redhat.com/errata/RHSA-2026:20612
Vendor Advisory vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-5419
Vendor Advisory issue-tracking
x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2467686
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:20613
Scores
CVSS v3
3.7
EPSS
0.0047
EPSS Percentile
36.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-208
Status
published
Products (7)
Red Hat/Red Hat Enterprise Linux 10
0:3.8.10-4.el10_2
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
0:3.8.10-4.el9_8
Red Hat/Red Hat Hardened Images
Red Hat/Red Hat OpenShift Container Platform 4
Published
Jun 01, 2026
Tracked Since
Jun 02, 2026