CVE-2012-0920
Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command...
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."
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2012-0920- CVSS 2.0
- 7.1 High
AV:N/AC:H/Au:S/C:C/I:C/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2012-0920- Updated
- 2026-11-02
EUVDEUVD-2012-0943 No score
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."
- Record
EUVD-2012-0943- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hw56-hwpj-4432 No score
Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command...
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."
- Record
GHSA-hw56-hwpj-4432- Updated
- 2026-11-02
OSV No score
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."
- Record
CVE-2012-0920- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-0920 No score
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."
- Record
DEBIAN-CVE-2012-0920- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-0920 is a high vulnerability (CVSS 7.1) in Dropbear Ssh Project Ssh, published April 23, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.42%, the 93rd percentile. Fixed in dropbear 2012.55-1.