How severe is CVE-2012-0920?

CVE-2012-0920 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2012-0920 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0920?

CVE-2012-0920 primarily affects Dropbear Ssh Project Dropbear Ssh. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-0920?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2012-0920 published?

CVE-2012-0920 was published on 2012-06-05 and last updated on 2026-06-16.

CVE-2012-0920

CVE-2012-0920 is a high-severity vulnerability in Dropbear Ssh Project Dropbear Ssh with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Dropbear Ssh Project Dropbear Ssh
Published: 2012-06-05
Last modified: 2026-06-16

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."

Frequently asked questions

What is CVE-2012-0920?: 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."
How severe is CVE-2012-0920?: CVE-2012-0920 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2012-0920 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0920?: CVE-2012-0920 primarily affects Dropbear Ssh Project Dropbear Ssh. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-0920?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2012-0920 published?: CVE-2012-0920 was published on 2012-06-05 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

More vulnerabilities in Dropbear Ssh Project Dropbear Ssh

CVE-2016-7407 — Critical (CVSS 9.8): The dropbearconvert command in Dropbear SSH before 2016.74 allows attackers to execute arbitrary code via a crafted…
CVE-2016-7406 — Critical (CVSS 9.8): Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format…
CVE-2017-9078 — High (CVSS 8.8): The server in Dropbear before 2017.75 might allow post-authentication root remote code execution because of a double…
CVE-2016-7408 — High (CVSS 8.8): The dbclient in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via a crafted (1) -m or…
CVE-2020-36254 — High (CVSS 8.1): scp.c in Dropbear before 2020.79 mishandles the filename of . or an empty filename, a related issue to CVE-2018-20685.
CVE-2021-36369 — High (CVSS 7.5): An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication…

All CVEs affecting Dropbear Ssh Project Dropbear Ssh →

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →