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Fencer Vulns
medium 5.0

CVE-2009-1384 json

pam_krb5 2.2.14 through 2.3.4, as used in Red Hat Enterprise Linux (RHEL) 5, generates different password prompts depending on whether the…

published 2009-05-28 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1382

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

pam_krb5 2.2.14 through 2.3.4, as used in Red Hat Enterprise Linux (RHEL) 5, generates different password prompts depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.

Patch / fix

  • pam_krb5 RHEL 5 2.2.14-15

red hat advisories RHSA-2010:0258

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-1384 updated cvss 2.6

pam_krb5: Password prompt varies for existent and non-existent users

  • Red Hat Enterprise Linux (v. 5 server) pam_krb5 2.2.14-15 Red Hat Enterprise Linux Desktop (v. 5 client) pam_krb5 2.2.14-15
    fixed: vendor fix RHSA-2010:0258

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.89% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.