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CVE-2026-18495

Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough

Published: Sep 11, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-122
6.1MEDIUM
NVD MITRE
EPSS Score
0.1%
Top 98.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:RS:UC:LI:LA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:HAvailability
High
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Weaknesses

CWE-122

Affected Products

Red Hat
commercial·US
Red Hat Hardened ImagesOn-premOS
Operating Systems / linux-distro
Red Hat Ceph Storage 4On-prem
Operating Systems / linux-distro
Red Hat Ceph Storage 6On-prem
Databases / data-warehouse-analytics
Red Hat Ceph Storage 7On-premDatabase
Databases / data-warehouse-analytics
Red Hat Ceph Storage 8On-premDatabase
Databases / data-warehouse-analytics
Red Hat Ceph Storage 9On-prem
Databases / cache-message-queue
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
and 4 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:53467
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-18495
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2531414
bugzilla.redhat.com
and 2 more references View all →

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