CVE-2026-76014: BusyBox FEATURE_WGET_TIMEOUT wget.c null pointer dereference

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-19 · updated 2026-08-25
Weakness: CWE-404

Description

A vulnerability has been found in BusyBox up to 1.30.1. This vulnerability affects unknown code of the file networking/wget.c of the component FEATURE_WGET_TIMEOUT Handler. Such manipulation of the argument -T leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The name of the patch is 83a40bf7a93c8ac093d33ab452222dd5b9eb57ff. A patch should be applied to remediate this issue.

Affected products

BusyBox: 1.30.0, 1.30.1

References

https://gist.github.com/wyxstarry/5c199ec824928c5ae5816aaecbc6df03
https://github.com/mirror/busybox/commit/83a40bf7a93c8ac093d33ab452222dd5b9eb57ff
https://github.com/mirror/busybox/issues/124
https://vuldb.com/cve/CVE-2026-76014
https://vuldb.com/submit/878212
https://vuldb.com/vuln/391923
https://vuldb.com/vuln/391923/cti

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