CVE-2026-18495
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
27/100
Published: 2026-09-11
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
Low Complexity
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
Required
S:
Unchanged
C:
Low
I:
Low
A:
High
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.
Weakness Classification (1)
References & Advisories (5)
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT