CVE-2026-6232 Out-of-bounds write in LR11xx Transceiver
An attacker with physical and SPI bus access can trigger an out-of-bounds write in Semtech LR11xx transceiver firmware, potentially leading to code execution or denial of service.
- 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-2026-6232?
CVE-2026-6232 is a medium-severity memory corruption vulnerability in Semtech LR1110 Modem-e, published on 12 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An out-of-bounds write vulnerability in the SPI host command interface of Semtech's LR11xx transceiver firmware where a crafted SPI host command with an oversized length field can cause the firmware to write up to 254 arbitrary bytes past the bounds of an internal, non-persistent memory buffer. Exploitation requires physical access to the device and logical access to the SPI bus.
Weakness: CWE-787
Which versions are affected by CVE-2026-6232?
How do I fix CVE-2026-6232?
No fix has been published for CVE-2026-6232 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-2026-6232 being exploited?
There is no known exploitation of CVE-2026-6232 in the wild and no public exploit code.
Sources
Also known as GHSA-p9mw-jx6h-2wjg.