CVE-2026-0849 crypto: ATAES132A response length allows stack buffer overflow
A stack buffer overflow in the Zephyr crypto driver allows attackers to corrupt kernel memory and potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0849?
CVE-2026-0849 is a low-severity memory corruption vulnerability in Zephyrproject Zephyr, published on 14 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Malformed ATAES132A responses with an oversized length field overflow a 52-byte stack buffer in the Zephyr crypto driver, allowing a compromised device or bus attacker to corrupt kernel memory and potentially hijack execution.
Weakness: CWE-120
Which versions are affected by CVE-2026-0849?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2026-0849?
No fix has been published for CVE-2026-0849 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-0849 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0849 exists.
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Sources
Also known as GHSA-ff4p-3ggg-prp6.