Is CVE-2026-48066 actively exploited?

No active exploitation of CVE-2026-48066 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-48066 be exploited remotely?

No. CVE-2026-48066 requires local access to exploit.

What is the CVSS score of CVE-2026-48066?

CVE-2026-48066 has a CVSS score of 5.7 (MEDIUM).

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MEDIUM

CVE-2026-48066

CWE-362Published: May 27, 2026· Updated: May 28, 2026

5.7

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:3.9th

Official Description

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/log.c contains a process-wide static pointer that is written on every PAM invocation with the address of a stack-local variable. This violates the PAM re-entrancy requirement and creates a data race when the PAM stack is invoked concurrently from multiple threads. This vulnerability is fixed in 0.9.1.

NVD Source

Technical Analysis

CVE-2026-48066 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.7.