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CVE-2012-0920
Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command restriction and public key authentication are…
- 7.1HighCVSS base score
- 6.4%Exploitation in 30 daysEPSS · top 6.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command restriction and public key authentication are enabled, allows remote authenticated users to execute arbitrary code and bypass command restrictions via multiple crafted command requests, related to "channels concurrency."
Timeline
ID reserved
By mitre
- 4 months later
· 4 months later
Published
- 12 years later
· 12 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 | High7.1 | AV:N/AC:H/Au:S/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 6.4% · top 6.3% 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: High 7.1.
Affected products
n/a
- affected n/a
References
9
- dropbear-code-execution(73444) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 48147 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-2456 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 79590 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://matt.ucc.asn.au/dropbear/CHANGES (opens in a new tab)x_refsource_CONFIRMx_transferred
- 52159 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.mantor.org/~northox/misc/CVE-2012-0920.html (opens in a new tab)x_refsource_MISCx_transferred
- 48929 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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-2012-0943 (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-2012-0920)Record last updated .