CVE-2026-88832 Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow
Attackers can trigger a heap buffer overflow in BusyBox romfs parsing via crafted filesystem images, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-88832?
CVE-2026-88832 is a high-severity memory corruption vulnerability in Red Hat Hardened Images, published on 23 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled metadata, causing a heap buffer overflow when processing crafted filesystem images.
Weakness: CWE-787
Which versions are affected by CVE-2026-88832?
How do I fix CVE-2026-88832?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-88832 being exploited?
There is no known exploitation of CVE-2026-88832 in the wild and no public exploit code.
Sources
Also known as AZL-105128, DEBIAN-CVE-2026-88832, ECHO-b60b-adf0-72ff, GHSA-hqw2-f49w-7w56, UBUNTU-CVE-2026-88832.