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CVE-2006-5170

23
FAUCET Score

CVE-2006-5170 describes a vulnerability in pam_ldap within nss_ldap on Red Hat Enterprise Linux 4, Fedora Core 3, and potentially other distributions. The flaw allows pam_authenticate to return a success code even when LDAP authentication has failed, due to improper handling of PasswordPolicyResponse controls. With a CVSS score of 7.5, this vulnerability is considered highly severe, allowing unauthenticated attackers to potentially bypass authentication (C, I, A: P). Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= core_3.0CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora_core:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:linux_kernel_2.6.9:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*
4.0_s390CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:4.0_s390:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.83%
Probability of exploitation in next 30 days
EPSS Percentile
89.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0383 is in the 80th percentile among its peer group of 51,551 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: nss_ldap-0:226-17
View patch
gentoovendor investigatingvia nvd_reference
View patch
redhatvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2006-5170Moderate

security flaw

Sep 20, 2006

References

bugzilla.padl.com / show_bug.cgi
Broken LinkIssue TrackingVendor Advisory
rhn.redhat.com / errata/RHSA-2006-0719.html
Vendor Advisory
bugzilla.redhat.com / bugzilla/show_bug.cgi
Issue TrackingVendor Advisory
secunia.com / advisories/22682
Third Party Advisory
secunia.com / advisories/22685
Third Party Advisory
secunia.com / advisories/22694
Third Party Advisory
secunia.com / advisories/22696
Third Party Advisory
secunia.com / advisories/22869
Third Party Advisory
secunia.com / advisories/23132
Third Party Advisory
secunia.com / advisories/23428
Third Party Advisory
security.gentoo.org / glsa/glsa-200612-19.xml
Vendor Advisory
securitytracker.com / id
Third Party AdvisoryVDB Entry
issues.rpath.com / browse/RPL-680
Broken LinkThird Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10418
Third Party Advisory
debian.org / security/2006/dsa-1203
Issue TrackingPatchVendor Advisory
mandriva.com / security/advisories
Third Party Advisory
novell.com / linux/security/advisories/2006_27_sr.html
Broken LinkVendor Advisory
securityfocus.com / archive/1/447859/100/200/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / bid/20880
Third Party AdvisoryVDB Entry
trustix.org / errata/2006/0061
Broken LinkThird Party Advisory
vupen.com / english/advisories/2006/4319
Third Party Advisory