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CVE-2026-54411 is an observable timing discrepancy in Linux-PAM through version 1.7.2 in the pam_userdb module’s plaintext-password comparison path. When pam_userdb performs plaintext credential comparison, authentication processing time varies according to password length and the number of matching leading characters. An attacker can use repeated measurements to infer the target account’s plaintext password incrementally.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
34 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A moderate-severity, network-accessible vulnerability affecting PAM packages in Miracle Linux 9 that can result in high confidentiality impact, but requires high attack complexity and has no stated integrity or availability impact.
A network-reachable, high-complexity confidentiality-impact vulnerability identified as CVE-2026-54411, addressed by Rocky Linux 9 advisory RLSA-2026-64815 for PAM-related packages.
A remotely accessible, high-complexity vulnerability affecting AlmaLinux 9 PAM packages that can result in high confidentiality impact. The referenced advisory was published September 8, 2026.
A remotely reachable, high-complexity vulnerability with potential high confidentiality impact affecting PAM packages on Red Hat Enterprise Linux 9 and RHEL EUS 9.8. The content identifies CWE-208 and indicates an updated advisory is available.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.