CVE-2026-76014 BusyBox FEATURE_WGET_TIMEOUT wget.c null pointer dereference
A local attacker can cause a denial of service in BusyBox by triggering a null pointer dereference in the wget timeout handler.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-76014?
CVE-2026-76014 is a medium-severity vulnerability in BusyBox, published on 19 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-76014?
How do I fix CVE-2026-76014?
Apply the vendor's patch.
Is CVE-2026-76014 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76014 exists.
Sources
Also known as DEBIAN-CVE-2026-76014, GHSA-xwfg-2qxj-cwwg, OESA-2026-3683, OESA-2026-3684, OESA-2026-3685, OESA-2026-3686 and 2 more.