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CVE-2013-4351
GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as if it has all bits set (all usage…
- 5.8MediumCVSS base score
- 2.5%Exploitation in 30 daysEPSS · top 15% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as if it has all bits set (all usage permitted), which might allow remote attackers to bypass intended cryptographic protection mechanisms by leveraging the subkey.
Timeline
ID reserved
By redhat
- 4 months later
· 4 months later
Published
- 11 years later
· 11 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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)
- 2.5% · top 15% of all CVEs (10 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.
Affected products
n/a
- affected n/a
References
9
- http://thread.gmane.org/gmane.comp.encryption.gpg.devel/17712/focus=18138 (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2013:1532 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-1987-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- DSA-2773 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [oss-security] 20130913 Re: GnuPG treats no-usage-permitted keys as all-usages-permitted (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2013:1459 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2013:1526 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- DSA-2774 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1010137 (opens in a new tab)x_refsource_CONFIRMx_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)
- EUVD EUVD-2013-4235 (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://cveledger.app/cve/CVE-2013-4351)Record last updated .