CVE-2007-0844

CVE-2007-0844 is a medium-severity vulnerability in Pam Ssh with a CVSS 2.0 base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The auth_via_key function in pam_ssh.c in pam_ssh before 1.92, when the allow_blank_passphrase option is disabled, allows remote attackers to bypass authentication restrictions and use private encryption keys requiring a blank passphrase by entering a non-blank passphrase.

Frequently asked questions

What is CVE-2007-0844?
The auth_via_key function in pam_ssh.c in pam_ssh before 1.92, when the allow_blank_passphrase option is disabled, allows remote attackers to bypass authentication restrictions and use private encryption keys requiring a blank passphrase by entering a non-blank passphrase.
How severe is CVE-2007-0844?
CVE-2007-0844 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2007-0844 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-0844?
CVE-2007-0844 affects Pam Ssh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-0844?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-0844 published?
CVE-2007-0844 was published on 2007-02-08 and last updated on 2026-06-16.

References

Affected products (1)