CVE-2026-24800 A heap-based buffer over-read or buffer overflow in tildearrow/furnace
A heap-based buffer overflow in Furnace's zlib module allows attackers to execute arbitrary code or cause a denial of service via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-24800?
CVE-2026-24800 is a critical memory corruption vulnerability in tildearrow furnace, published on 27 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.
Which versions are affected by CVE-2026-24800?
How do I fix CVE-2026-24800?
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-2026-24800 being exploited?
There is no known exploitation of CVE-2026-24800 in the wild and no public exploit code.
Sources
Also known as AZL-77997, AZL-78003, AZL-78006, AZL-78047, GHSA-mvr7-j94c-mhvx.