lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509…
Priority LOW 32CWE-264Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Partial · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates.
Why it matters now
EPSS 0.03404 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 33
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* | up to 3.1.20 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.0:*:*:*:*:*:*:* | 3.1.0 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.1:*:*:*:*:*:*:* | 3.1.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.2:*:*:*:*:*:*:* | 3.1.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.3:*:*:*:*:*:*:* | 3.1.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.4:*:*:*:*:*:*:* | 3.1.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.5:*:*:*:*:*:*:* | 3.1.5 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.6:*:*:*:*:*:*:* | 3.1.6 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.7:*:*:*:*:*:*:* | 3.1.7 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.8:*:*:*:*:*:*:* | 3.1.8 | Vulnerable | GNU |
- cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* Versions up to 3.1.20 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.0:*:*:*:*:*:*:* Versions 3.1.0 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.1:*:*:*:*:*:*:* Versions 3.1.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.2:*:*:*:*:*:*:* Versions 3.1.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.3:*:*:*:*:*:*:* Versions 3.1.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.4:*:*:*:*:*:*:* Versions 3.1.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.5:*:*:*:*:*:*:* Versions 3.1.5 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.6:*:*:*:*:*:*:* Versions 3.1.6 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.7:*:*:*:*:*:*:* Versions 3.1.7 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.8:*:*:*:*:*:*:* Versions 3.1.8 Vulnerable ·GNU
Show 23 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gnutls:3.1.9:*:*:*:*:*:*:* | 3.1.9 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.10:*:*:*:*:*:*:* | 3.1.10 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.11:*:*:*:*:*:*:* | 3.1.11 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.12:*:*:*:*:*:*:* | 3.1.12 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.13:*:*:*:*:*:*:* | 3.1.13 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.14:*:*:*:*:*:*:* | 3.1.14 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.15:*:*:*:*:*:*:* | 3.1.15 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.16:*:*:*:*:*:*:* | 3.1.16 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.17:*:*:*:*:*:*:* | 3.1.17 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.18:*:*:*:*:*:*:* | 3.1.18 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.1.19:*:*:*:*:*:*:* | 3.1.19 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* | up to 3.2.10 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.0:*:*:*:*:*:*:* | 3.2.0 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.1:*:*:*:*:*:*:* | 3.2.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.2:*:*:*:*:*:*:* | 3.2.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.3:*:*:*:*:*:*:* | 3.2.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.4:*:*:*:*:*:*:* | 3.2.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.5:*:*:*:*:*:*:* | 3.2.5 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.6:*:*:*:*:*:*:* | 3.2.6 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.7:*:*:*:*:*:*:* | 3.2.7 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.8:*:*:*:*:*:*:* | 3.2.8 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.8.1:*:*:*:*:*:*:* | 3.2.8.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.2.9:*:*:*:*:*:*:* | 3.2.9 | Vulnerable | GNU |
- cpe:2.3:a:gnu:gnutls:3.1.9:*:*:*:*:*:*:* Versions 3.1.9 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.10:*:*:*:*:*:*:* Versions 3.1.10 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.11:*:*:*:*:*:*:* Versions 3.1.11 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.12:*:*:*:*:*:*:* Versions 3.1.12 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.13:*:*:*:*:*:*:* Versions 3.1.13 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.14:*:*:*:*:*:*:* Versions 3.1.14 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.15:*:*:*:*:*:*:* Versions 3.1.15 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.16:*:*:*:*:*:*:* Versions 3.1.16 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.17:*:*:*:*:*:*:* Versions 3.1.17 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.18:*:*:*:*:*:*:* Versions 3.1.18 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.1.19:*:*:*:*:*:*:* Versions 3.1.19 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* Versions up to 3.2.10 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.0:*:*:*:*:*:*:* Versions 3.2.0 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.1:*:*:*:*:*:*:* Versions 3.2.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.2:*:*:*:*:*:*:* Versions 3.2.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.3:*:*:*:*:*:*:* Versions 3.2.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.4:*:*:*:*:*:*:* Versions 3.2.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.5:*:*:*:*:*:*:* Versions 3.2.5 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.6:*:*:*:*:*:*:* Versions 3.2.6 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.7:*:*:*:*:*:*:* Versions 3.2.7 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.8:*:*:*:*:*:*:* Versions 3.2.8 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.8.1:*:*:*:*:*:*:* Versions 3.2.8.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.2.9:*:*:*:*:*:*:* Versions 3.2.9 Vulnerable ·GNU
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 3 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2014-1959
- 2026-10-03 Alias added: GHSA-pcqq-cwj9-7ggm
References
More Gnutls vulnerabilities
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
- TI-2026-03321 Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison CVSS 3.1HIGH 7.4
- TI-2024-00525 Gnutls: rejects certificate chain with distributed trust CVSS 3.1HIGH 7.5
- TI-2023-00345 Observable discrepancy in gnutls CVSS 3.1HIGH 7.4
- TI-2019-02841 Use after free in gnutls CVSS 3.0HIGH 7.5
- TI-2017-03378 Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2014-1959 · CVE Program
- CVE-2014-1959 · NVD
- FIRST EPSS
- GHSA-pcqq-cwj9-7ggm · GitHub Advisory Database · CC BY 4.0
- CVE-2014-1959 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences