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CVE-2009-1273

15
FAUCET Score

CVE-2009-1273 describes an information disclosure vulnerability in pam_ssh version 1.92 and potentially other versions, specifically when PAM is compiled with USE=ssh. This flaw allows remote attackers to enumerate valid usernames due to differing error messages for valid versus invalid login attempts. With a CVSS score of 5.0, this vulnerability has a low attack complexity and requires no authentication, but only impacts confidentiality by revealing usernames. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.92CPE matchmatch criteria
cpe:2.3:a:andrew_j.korty:pam_ssh:1.92:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.31%
Probability of exploitation in next 30 days
EPSS Percentile
67.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0131 is in the 47th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-1273Low

pam_ssh: Password prompt varies for existent and non-existent users

Mar 24, 2009

References

bugs.gentoo.org / show_bug.cgi
secunia.com / advisories/34536
Vendor Advisory
secunia.com / advisories/34986
redhat.com / archives/fedora-package-announce/2009-May/msg00116.html
redhat.com / archives/fedora-package-announce/2009-May/msg00145.html