PatchTheCVECVE-2005-2977: The SELinux version of PAM before 0.78 r3 allows local users to perform brute force password guessing attacks
CVE-2005-2977 is a low-severity flaw (CVSS 2.1) affecting pam. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The SELinux version of PAM before 0.78 r3 allows local users to perform brute force password guessing attacks via unix_chkpwd, which does not log failed guesses or delay its responses.
Why this priority
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 2.1 (Low) |
| EPSS exploit chance | 0.4% (top 63%) |
| CISA exploited list | No |
| Published | 2005-11-01 |
| Last modified | 2026-06-16 |
Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2005-2977?
pam: upgrade to newer than 0.80. Exact commands for each OS are on this page.
Is CVE-2005-2977 being exploited?
CVE-2005-2977 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2005-2977 affect?
CVE-2005-2977 affects pam. Severity is low (CVSS 2.1). The SELinux version of PAM before 0.78 r3 allows local users to perform brute force password guessing attacks via unix_chkpwd, which does not log failed guesses or delay its responses.
How urgent is CVE-2005-2977?
Priority 22/100. On your watchlist
Related CVEs
- CVE-2002-1227 HIGH 7.5 DOWNGRADE PAM 0.76 treats a disabled password as if it were an empty (null) password, which allows local and remote atta