Vulnerability · Published Jan 27, 2026 · Assigned by GovTech CSG
CVE-2026-24800A heap-based buffer over-read or buffer overflow in tildearrow/furnace
Critical 10.0
In plain English
A critical-severity out-of-bounds write in furnace from tildearrow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 4.0)10.0Critical
Exploit odds (30 days)0.3%top 76.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tildearrow | furnace | 0 – before 0.6.8.3 |
Weakness: CWE-787, CWE-120 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:N/AU:Y/R:U/V:D/RE:L/U:Red