CVE-2026-90994

A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pamparseindata. A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This...

CVE-2026-90995: NULL Pointer Dereference

A flaw was found in SSSD System Security Services Daemon. A local attacker with privileges to connect to the PAM Pluggable Authentication Modules responder socket can send a specially crafted protocol request. If the pamappservices configuration is enabled and the service item is omitted from the...

PT-2026-91262

Name of the Vulnerable Software and Affected Versions SSSD System Security Services Daemon affected versions not specified Description A local attacker with privileges to connect to the PAM Pluggable Authentication Modules responder socket can send a specially crafted protocol request. When the p...

PT-2026-91261

A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pam parse in data. A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body...

CVE-2026-90994: Out-of-bounds Read

A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pamparseindata. A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This...

Linux Distros Unpatched Vulnerability : CVE-2026-90995

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in SSSD System Security Services Daemon. A local attacker with privileges to connect to the PAM Pluggable Authentication Modules responder sock...

Linux Distros Unpatched Vulnerability : CVE-2026-90994

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pamparseindata. A local client with acces...

JupyterHub has Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login

ImpactInvalid input to login resulted in unbounded logging output. Only form-based Authenticators the default PAM Authenticator, but not the more widely used OAuthenticator are affected. PatchesUpgrade to 5.5.0. WorkaroundsUse an Authenticator that doesn't use a login form, such as OAuthenticator...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS : SSSD vulnerability (USN-8718-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8718-1 advisory. It was discovered that SSSD did not properly validat...

pam security update

An update is available for pam. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Pluggable Authentication Modules PAM provide a system to set up authentication...

RLSA-2026:64815 Moderate: pam security update

Pluggable Authentication Modules PAM provide a system to set up authentication policies without the need to recompile programs to handle authentication. Security Fixes: linux-pam: Plaintext password recovery via timing discrepancy in pamuserdb module CVE-2026-54411 For more details about the...

openSUSE 16: libipa_hbac-devel / libipa_hbac0 / libnfsidmap-sss / etc (openSUSE-SU-2026:21748-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21748-1 advisory. Security issues fixed: - CVE-2026-68742: insufficient validation in the NSS responder can lead to an out-of-bounds read and a process crash when...

AlmaLinux 9 : pam (ALSA-2026:64815)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:64815 advisory. linux-pam: Plaintext password recovery via timing discrepancy in pamuserdb module CVE-2026-54411 Tenable has extracted the preceding description block directly fr...

RockyLinux 9 : pam (RLSA-2026:64815)

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:64815 advisory. linux-pam: Plaintext password recovery via timing discrepancy in pamuserdb module CVE-2026-54411 Tenable has extracted the preceding description block directly...

Moderate: Red Hat Security Advisory: pam security update

An update for pam is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CV...

linux-pam: Plaintext password recovery via timing discrepancy in pam_userdb module

A flaw was found in Linux-PAM's pamuserdb module. This vulnerability, categorized as an Observable Timing Discrepancy CWE-208, allows a local or network-adjacent attacker to recover plaintext passwords. By repeatedly attempting authentication and measuring response-timing differences during...

ALSA-2026:64815 Moderate: pam security update

Pluggable Authentication Modules PAM provide a system to set up authentication policies without the need to recompile programs to handle authentication. Security Fixes: linux-pam: Plaintext password recovery via timing discrepancy in pamuserdb module CVE-2026-54411 For more details about the...

Moderate: pam security update

Pluggable Authentication Modules PAM provide a system to set up authentication policies without the need to recompile programs to handle authentication. Security Fixes: linux-pam: Plaintext password recovery via timing discrepancy in pamuserdb module CVE-2026-54411 For more details about the...

RHEL 9 : pam (RHSA-2026:64815)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:64815 advisory. Pluggable Authentication Modules PAM provide a system to set up authentication policies without the need to recompile programs to handle...

LOYTEC L-IP BACnet/IP Routers Improper Authentication (CVE-2026-12504)

The PAM configuration of a LOYTEC L-IP BACnet/IP router uses the 'pamunix.so nullok' option, which permits authentication against any local account that has an empty password field in '/etc/passwd'. A local attacker can leverage an account left without a password to authenticate as uid=0 and obta...