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CVE-2009-5138
GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, treats version 1 X.509 certificates as intermediate…
Medium5.8EPSS 1.8%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, 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, a different vulnerability than CVE-2014-1959.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.8% · top 21% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Weakness
Affected products
n/a
- affected n/a
References (14)
- 57321 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 57260 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- SUSE-SU-2014:0445 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 57274 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- SUSE-SU-2014:0319 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20140225 Re: Re: CVE Request - GnuTLS corrects flaw in certificate verification (3.1.x/3.2.x) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2014:0247 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- SUSE-SU-2014:0320 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2014:0322 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [gnutls-devel] 20090109 Re: gnutls fails to use Verisign CA cert without a Basic Constraint (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://gitorious.org/gnutls/gnutls/commit/c8dcbedd1fdc312f5b1a70fcfbc1afe235d800cd (opens in a new tab)x_refsource_CONFIRMx_transferred
- 57254 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1069301 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20140227 Re: CVE Request - GnuTLS corrects flaw in certificate verification (3.1.x/3.2.x) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-5138)Record last updated .