CVE-2024-10963Network attack vector

Authentication bypass via ambiguous hostname token matching

Published Nov 7, 2024 · Updated Aug 31, 2026

Improper authentication in the pam_access module of Linux-PAM allows remote attackers to bypass configured login restrictions. The origin matcher treats every access.conf token as a possible hostname, so a remote host named like an allowed PAM service or TTY can satisfy a rule intended only for that local origin. Exposure requires pam_access in the service stack and an affected rule; successful exploitation grants the access authorized by that rule.

CVSS severity7.4
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in the pam_access module of Linux-PAM allows remote attackers to bypass configured login restrictions. The origin matcher treats every access.conf token as a possible hostname, so a remote host named like an allowed PAM service or TTY can satisfy a rule intended only for that local origin. Exposure requires pam_access in the service stack and an affected rule; successful exploitation grants the access authorized by that rule.

The record

CVE
CVE-2024-10963
Published
Nov 7, 2024
Updated
Aug 31, 2026
Vendor
Red Hat
Product
Red Hat Enterprise Linux 8
Classifications
CWE-287
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Red Hat · Red Hat OpenShift Container Platform 4.16Affected versions are unavailable in this record.
Linux-PAM Project · Linux-PAMversion=1.3.1; version=1.5.1; version=1.6.0 <1.7.0
Red Hat · Red Hat OpenShift Container Platform 4.18Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
Red Hat · Red Hat OpenShift AIAffected versions are unavailable in this record.
Red Hat · Red Hat OpenShift Container PlatformAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportAffected versions are unavailable in this record.
Red Hat · Red Hat OpenShift Container Platform 4.17Affected versions are unavailable in this record.

Published CVSS scores

7.4Red Hat, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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