What is CVE-2026-47271?

CVE-2026-47271 is a medium-severity vulnerability in Mcdope Pam_usb, classified under NULL Pointer Dereference. CVSS score: 5.1/10. Published 2026-05-27.

How severe is CVE-2026-47271?

Medium severity. CVSS v3 base score is 5.1 out of 10.

NULL pointer dereference in Mcdope Pam_usb

CVE-2026-47271

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, src/mem.c implemented out-of-memory guards for xmalloc(), xrealloc(), and xstrdup() using assert(data != NULL). The C standard specifies tha…

EPSS: 0.000 (5.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mcdope Pam_usb — versions < 0.9.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-47271?: CVE-2026-47271 is a medium-severity vulnerability in Mcdope Pam_usb, classified under NULL Pointer Dereference. CVSS score: 5.1/10. Published 2026-05-27.
How severe is CVE-2026-47271?: Medium severity. CVSS v3 base score is 5.1 out of 10.