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Vulnerability record · CVE-2012-0920 · published 5 June 2012

CVE-2012-0920: Dropbear ssh project dropbear ssh vulnerability

DDropbear Ssh Project · Dropbear Ssh

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."

7.1 CVSS 2.0 High EPSS 6.5% · top 6.5% CWE-399 · CWE-399
7.1CVSS 2.0 base score
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

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."

AV:N/AC:H/Au:S/C:C/I:C/A:C

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://matt.ucc.asn.au/dropbear/CHANGES Vendor Advisory
http://secunia.com/advisories/48147 Third Party Advisory
http://secunia.com/advisories/48929 Third Party Advisory
http://www.debian.org/security/2012/dsa-2456 Third Party Advisory
http://www.osvdb.org/79590 Broken Link
http://www.securityfocus.com/bid/52159 Third Party AdvisoryVDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/73444 Third Party AdvisoryVDB Entry
https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749 Vendor Advisory
https://www.mantor.org/~northox/misc/CVE-2012-0920.html Third Party Advisory
http://matt.ucc.asn.au/dropbear/CHANGES Vendor Advisory
http://secunia.com/advisories/48147 Third Party Advisory
http://secunia.com/advisories/48929 Third Party Advisory
http://www.debian.org/security/2012/dsa-2456 Third Party Advisory
http://www.osvdb.org/79590 Broken Link
http://www.securityfocus.com/bid/52159 Third Party AdvisoryVDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/73444 Third Party AdvisoryVDB Entry
https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749 Vendor Advisory
https://www.mantor.org/~northox/misc/CVE-2012-0920.html Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2012-0920), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.