CVE-2026-54411
mediumpriority · track · 0EPSS 0.003 · 25 %ileDEEUFREPSS · scored 2026-10-28
Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pam_userdb module's plaintext-password comparison path in modules/pam_userdb/pam_userdb.c that allows a local or network-adjacent attacker able to repeatedly drive authentication through a calling service to recover the plaintext password of a target account by measuring response-timing differences.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2913PAM: Schwachstelle ermöglicht Offenlegung von InformationenDeutsch2026-08-18csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in PAM ausnutzen, um Informationen offenzulegen.
- WID-SEC-W-2026-3595IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2026-09-27csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen und um Sicherheitsvorkehrungen zu umgehen.
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (12)
External citations — patches, advisories, analysis.
- https://cwe.mitre.org/data/definitions/208.htmlcnnvd
- https://github.com/linux-pam/linux-pamcnnvd
- https://github.com/linux-pam/linux-pam/blob/master/libpam/include/pam_inline.hcnnvd
- https://github.com/linux-pam/linux-pam/blob/master/modules/pam_userdb/pam_userdb.c#L327cnnvd
- https://cwe.mitre.org/data/definitions/208.htmlenisa_euvd
- https://github.com/linux-pam/linux-pamenisa_euvd
- https://github.com/linux-pam/linux-pam/blob/master/libpam/include/pam_inline.henisa_euvd
- https://github.com/linux-pam/linux-pam/blob/master/modules/pam_userdb/pam_userdb.c#L327enisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan