High 7.5Published Jan 16, 2024

CVE-2024-0553Gnutls: incomplete fix for cve-2023-5981

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

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It affects Red Hat Enterprise Linux 8 and 6 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat Enterprise Linux 8

Exploited in the last 30 days

A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the RSA-PSK key exchange, potentially leading to the leakage of sensitive data. CVE-2024-0553 is designated as an incomplete resolution for CVE-2023-5981.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-203
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Red Hat Red Hat Enterprise Linux 8 redhat:enterprise_linux	from 0:3.6.16-8.el8_9.1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support redhat:rhel_eus	from 0:3.6.16-5.el8_6.3 not affected	CNA record
Red Hat RHODF-4.15-RHEL-9 redhat:openshift_data_foundation	from v4.15.0-37 not affected	CNA record
Red Hat RHOL-5.8-RHEL-9 redhat:logging	from v5.8.6-22 not affected	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1	CISA ADP
gnu gnutls gnu:gnutls	before 3.8.3	NVD
fedoraproject fedora fedoraproject:fedora	39	NVD
redhat enterprise_linux redhat:enterprise_linux	8.0; 9.0	NVD

References

References

https://access.redhat.com/errata/RHSA-2024:0533	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2024:0627	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2024:0796	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2024:1082	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2024:1108	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2024:1383	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2024:2094	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2024-0553	vdb-entry, x-refsource-redhat, third-party-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2258412	issue-tracking, x-refsource-redhat, third-party-advisory
https://gitlab.com/gnutls/gnutls/-/issues/1522	exploit, issue-tracking, vendor-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.