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High severity7.5NVD Advisory· Published May 21, 2026· Updated May 21, 2026

CVE-2026-45255

CVE-2026-45255

Description

When bsdinstall or bsdconfig are prompted to scan for nearby Wi-Fi networks, they build up a list of network names and use bsddialog(1) to prompt the user to select a network. This is implemented using a shell script, and the code which handled network names was not careful to prevent expansion by the shell. As a result, a suitably crafted network name can be used to execute commands via a subshell.

The problem can be exploited to execute code as root on the system running bsdinstall or bsdconfig. The attacker would need to create an access point with a specially crafted name and be within range of a Wi-Fi scan. Note that bsdinstall and bsdconfig are vulnerable as soon as the user prompts them to scan for nearby networks; they do not need to actually select the malicious network.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

32
  • FreeBSD/FreeBSDinferred30 versions
    (expand)+ 29 more
    • (no CPE)
    • cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p10:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p11:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p12:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p13:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p7:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p8:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.3:p9:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.4:-:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.4:p1:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.4:p2:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.4:p3:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.4:p4:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:14.4:rc1:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:-:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p1:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p2:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p3:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p4:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p5:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p6:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p7:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:15.0:p8:*:*:*:*:*:*
  • FreeBSD/bsdinstallllm-fuzzy
  • FreeBSD/bsdconfigllm-fuzzy

Patches

Vulnerability mechanics

References

1

News mentions

0

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