HIGH
CVE-2012-0920
CWE-399Published: June 5, 2012· Updated: Jun 16, 2026
7.1
CVSS v3.1
Official 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."
Technical Analysis
CVE-2012-0920 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:H/Au:S/C:C/I:C/A:C
Affected Vendors & Products
Debian1 product(s)
debian linux
dropbear_ssh_project1 product(s)
dropbear ssh
Source: NVD CPE · 3 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (18)
→
http://matt.ucc.asn.au/dropbear/CHANGESVendor Advisory
→
http://secunia.com/advisories/48147Third Party Advisory
→
http://secunia.com/advisories/48929Third Party Advisory
→
http://www.debian.org/security/2012/dsa-2456Third Party Advisory
→
http://www.osvdb.org/79590Broken Link
→
http://www.securityfocus.com/bid/52159Third Party Advisory · VDB Entry
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/73444Third Party Advisory · VDB Entry
→
https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749Vendor Advisory
→
https://www.mantor.org/~northox/misc/CVE-2012-0920.htmlThird Party Advisory
→
http://matt.ucc.asn.au/dropbear/CHANGESVendor Advisory
→
http://secunia.com/advisories/48147Third Party Advisory
→
http://secunia.com/advisories/48929Third Party Advisory
→
http://www.debian.org/security/2012/dsa-2456Third Party Advisory
→
http://www.osvdb.org/79590Broken Link
→
http://www.securityfocus.com/bid/52159Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2012-0920
CVSS Score7.1 / 10
SeverityHIGH
WeaknessCWE-399
CISA KEVNo
Affected2 vendor(s)
PublishedJun 5, 2012
Related CVEs (CWE-399)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2012-0920 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.