CVE-2026-18495 — Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough
A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An a…
Published: 2026-09-11 · CVSS: 6.1 · CVSS 3.1
A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7