How severe is CVE-2009-1384?

CVE-2009-1384 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-1384 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1384?

CVE-2009-1384 primarily affects Eyrie Pam-krb5. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1384?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-1384 published?

CVE-2009-1384 was published on 2009-05-28 and last updated on 2026-06-16.

CVE-2009-1384

CVE-2009-1384 is a medium-severity vulnerability in Eyrie Pam-krb5 with a CVSS 2.0 base score of 5.0. 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-287.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Eyrie Pam-krb5
Published: 2009-05-28
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2009-1384?: 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.
How severe is CVE-2009-1384?: CVE-2009-1384 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-1384 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1384?: CVE-2009-1384 primarily affects Eyrie Pam-krb5. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1384?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1384 published?: CVE-2009-1384 was published on 2009-05-28 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:eyrie:pam-krb5:2.2.14:*:*:*:*:*:*:*
cpe:2.3:a:eyrie:pam-krb5:2.3:*:*:*:*:*:*:*
cpe:2.3:a:eyrie:pam-krb5:2.3.4:*:*:*:*:*:*:*

More vulnerabilities in Eyrie Pam-krb5

CVE-2009-0360 — Medium (CVSS 6.2): Russ Allbery pam-krb5 before 3.13, when linked against MIT Kerberos, does not properly initialize the Kerberos…
CVE-2009-0361 — Medium (CVSS 4.6): Russ Allbery pam-krb5 before 3.13, as used by libpam-heimdal, su in Solaris 10, and other software, does not properly…

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →