CVE-2026-6846 Binutils: binutils: arbitrary code execution via malformed xcoff object file processing
A heap-buffer-overflow in Binutils allows local attackers to execute arbitrary code or cause denial of service via crafted XCOFF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-6846?
CVE-2026-6846 is a high-severity memory corruption vulnerability in Gnu Binutils, published on 22 Apr 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
A flaw was found in binutils. A heap-buffer-overflow vulnerability exists when processing a specially crafted XCOFF (Extended Common Object File Format) object file during linking. A local attacker could trick a user into processing this malicious file, which could lead to arbitrary code execution, allowing the attacker to run unauthorized commands, or cause a denial of service, making the system unavailable.
Weakness: CWE-122
Which versions are affected by CVE-2026-6846?
It affects 4 products.
Products include Gnu Binutils, Redhat Enterprise Linux, Redhat Hardened Images, Redhat Openshift Container Platform.
How do I fix CVE-2026-6846?
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-2026-6846 being exploited?
There is no known exploitation of CVE-2026-6846 in the wild and no public exploit code.
Other vulnerabilities in Gnu Binutils
Sources
Also known as AZL-85514, AZL-85536, CLSA-2026-1782996728, CLSA-2026-1782997495, CLSA-2026-1783079440, CLSA-2026-1783081026 and 15 more.