SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2006-5170

pam_ldap in nss_ldap on Red Hat Enterprise Linux 4, Fedora Core 3 and earlier, and possibly other distributions does not return an error condition when an LDAP directory server responds with a PasswordPolicyResponse control response, which causes the…

HIGH 7.5EPSS 4.07%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.07%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

pam_ldap in nss_ldap on Red Hat Enterprise Linux 4, Fedora Core 3 and earlier, and possibly other distributions does not return an error condition when an LDAP directory server responds with a PasswordPolicyResponse control response, which causes the pam_authenticate function to return a success code even if authentication has failed, as originally reported for xscreensaver.

CVSS 2.0
7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
4.07% probability · 91th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-755
Affected
fedoraproject/fedora core · redhat/enterprise linux · redhat/enterprise linux desktop · redhat/enterprise linux for ibm z systems · redhat/enterprise linux for power big endian · redhat/enterprise linux server · redhat/enterprise linux workstation · debian/debian linux
Source
secalert@redhat.com
EPSS trend
0%3%5%26 October 2026: 4.07%26 October 202626 October 2026

EPSS 4.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.