Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-18495 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2026:53467	[email protected]
https://access.redhat.com/security/cve/CVE-2026-18495	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2531414	[email protected]
https://gitlab.com/libtiff/libtiff/-/merge_requests/729	[email protected]
https://gitlab.com/libtiff/libtiff/-/tree/67fd283d276f09db54dc39b9ef7b979d4b45c4b1	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-122	Heap-based Buffer Overflow	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 11, 2026	New CVE Received	[email protected]
Sep 11, 2026	CVE Modified	CISA-ADP