CVE-2026-67673 Memory corruption in n/a
An attacker with physical UART access can execute arbitrary code via a stack buffer overflow in the firmware's EDL command handler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-67673?
CVE-2026-67673 is a medium-severity memory corruption vulnerability in n/a, published on 3 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability exists in the cmd_edl function of OreSat Firmware v1.0. The vulnerability is triggered when processing the edl fw_flash command, where the <filename> argument is copied to a 64-byte stack buffer via memcpy without proper length validation. An attacker with physical access to the UART3 serial interface can exploit this vulnerability by sending a maliciously crafted command with an oversized filename parameter,
Weakness: CWE-121
Which versions are affected by CVE-2026-67673?
How do I fix CVE-2026-67673?
No fix has been published for CVE-2026-67673 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-2026-67673 being exploited?
There is no known exploitation of CVE-2026-67673 in the wild and no public exploit code.
Sources
Also known as GHSA-whc8-rqfv-v7r9.