CVE-2026-35170 openFPGALoader has a heap buffer overflow in BitParser::parseHeader() via crafted .bit file
A heap buffer overflow in openFPGALoader allows attackers to execute arbitrary code or cause denial of service by providing a crafted .bit file.
- 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
- None listed
What is CVE-2026-35170?
CVE-2026-35170 is a high-severity memory corruption vulnerability in trabucayre openFPGALoader, published on 6 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
openFPGALoader is a utility for programming FPGAs. In 1.1.1 and earlier, a heap-buffer-overflow read vulnerability exists in BitParser::parseHeader() that allows out-of-bounds heap memory access when parsing a crafted .bit file. No FPGA hardware is required to trigger this vulnerability.
Weakness: CWE-125
Which versions are affected by CVE-2026-35170?
It affects 1 product.
Products include Trabucayre Openfpgaloader.
How do I fix CVE-2026-35170?
No fix has been published for CVE-2026-35170 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-2026-35170 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35170 exists.
Other vulnerabilities in trabucayre openFPGALoader
Sources
Also known as GHSA-v59x-fvpj-j22x.