CVE WatchOct 7, 2026

CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when p

CVSS

6.1

Medium

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Sep 11, 2026 · Last modified: Oct 7, 2026 · CWE-122

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-10-052026-11-01

Technical description

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.

Official references

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