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.
CVE-2024-0553
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 1.6%, top 27% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- —
- EPSS
- 73.4%
- KEV
- Not listed
Published
January 16, 2024
Last Modified
March 24, 2026
References (27)
- secalert@redhathttps://access.redhat.com/errata/RHSA-2024:0533
- secalert@redhathttps://access.redhat.com/errata/RHSA-2024:0627
- secalert@redhathttps://access.redhat.com/errata/RHSA-2024:0796
- secalert@redhathttps://access.redhat.com/errata/RHSA-2024:1082
- secalert@redhathttps://access.redhat.com/errata/RHSA-2024:1108
- secalert@redhathttps://access.redhat.com/errata/RHSA-2024:1383
- secalert@redhathttps://access.redhat.com/errata/RHSA-2024:2094
- secalert@redhathttps://access.redhat.com/security/cve/CVE-2024-0553
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2258412
- secalert@redhathttps://gitlab.com/gnutls/gnutls/-/issues/1522
- secalert@redhathttps://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/01/19/3
- af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0533
- af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0627
- af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0796
Vendor Advisories for CVE-2024-0553(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(8)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libgnutls30 (3.8.1-4ubuntu1.2) @ mantic | 2026-05-24 | ubuntu |
| redhat | openshift-logging/vector-rhel9:v0.28.1-56 | 2024-05-01 | redhat |
| redhat | odf4/rook-ceph-rhel9-operator:v4.15.0-103 | 2024-03-19 | redhat |
| redhat | gnutls-0:3.6.16-5.el8_6.3 | 2024-03-05 | redhat |
| redhat | gnutls-0:3.7.6-21.el9_2.2 | 2024-03-05 | redhat |
| redhat | gnutls-0:3.6.16-7.el8_8.2 | 2024-02-13 | redhat |
| redhat | gnutls-0:3.6.16-8.el8_9.1 | 2024-01-31 | redhat |
| redhat | gnutls-0:3.7.6-23.el9_3.3 | 2024-01-29 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(8)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
- Microsoft MSRCCVE-2024-05532024-06-30
Gnutls: incomplete fix for cve-2023-5981
- Red HatRHSA-2024:0533MODERATE2024-01-16
RHSA-2024:0533 — Moderate
- Red HatRHSA-2024:0627MODERATE2024-01-16
RHSA-2024:0627 — Moderate
- Red HatRHSA-2024:0796MODERATE2024-01-16
RHSA-2024:0796 — Moderate
- Red HatRHSA-2024:1082MODERATE2024-01-16
RHSA-2024:1082 — Moderate
- Red HatRHSA-2024:1108MODERATE2024-01-16
RHSA-2024:1108 — Moderate
- Red HatRHSA-2024:2094MODERATE2024-01-16
RHSA-2024:2094 — Moderate
- UbuntuUSN-6593-1MEDIUM
GnuTLS vulnerabilities
Data Freshness Timeline
(refreshed 12× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 23:17 UTCEG score recompute▲ 1.60
- 2026-07-22 14:07 UTCEPSS rescore
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- 2026-07-14 22:40 UTCOSV refresh
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- 2026-06-09 09:55 UTCOSV refresh
- 2026-06-08 14:16 UTCEPSS rescore
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- 2026-05-26 07:18 UTCEPSS rescore
- 2026-05-26 07:18 UTCEPSS rescore
- 2026-05-24 10:16 UTCEG score recompute
- 2026-05-24 10:16 UTCVendor advisory
- 2026-05-24 10:16 UTCGHSA enrichment
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat · msrc
Same CWE
10 shownCWE-203
Frequently asked(5)
What is CVE-2024-0553?
When was CVE-2024-0553 disclosed?
Is CVE-2024-0553 actively exploited?
What is the CVSS score of CVE-2024-0553?
How do I remediate CVE-2024-0553?
Dependency Blast Radius
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