CVE-2026-18495

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

6.1 (MEDIUM) מקור הציון: NVD CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-4/10/2026

CWE

CWE-122

קישורים

• https://access.redhat.com/errata/RHSA-2026:53467
• https://access.redhat.com/security/cve/CVE-2026-18495
• https://bugzilla.redhat.com/show_bug.cgi?id=2531414
• https://gitlab.com/libtiff/libtiff/-/merge_requests/729
• https://gitlab.com/libtiff/libtiff/-/tree/67fd283d276f09db54dc39b9ef7b979d4b45‮…