Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-18495— Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough

Quick assessment

Affected
Red Hat Red Hat Hardened Images
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LibTIFF是LibTIFF组织的一个读写TIFF图像格式的文件处理库。 LibTIFF存在缓冲区错误漏洞，该漏洞源于tiff2pdf工具处理特制BigTIFF文件时发生整数截断错误，导致64位StripByteCounts值被截断为32位整数，造成内存分配不足并引发越界内存复制，可能导致崩溃和严重内存损坏。

CVSS 6.1 · Medium EPSS 0.12% · P2

Affected Version Matrix 19

VendorProduct Version RangeStatus
Red Hat Red Hat Ceph Storage 4 any unaffected
Red Hat Red Hat Ceph Storage 6 any unaffected
Red Hat Red Hat Ceph Storage 7 any unaffected
Red Hat Red Hat Ceph Storage 8 any unaffected
Red Hat Red Hat Ceph Storage 9 any unaffected
Red Hat Red Hat Enterprise Linux 10 any unaffected
any unaffected
any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
any affected
Red Hat Red Hat Enterprise Linux 8 any affected
any affected
any affected
Red Hat Red Hat Enterprise Linux 9 any unaffected
any unaffected
any affected
Red Hat Red Hat Hardened Images 4.7.2-2.hum1< * unaffected
any unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-18495

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
LibTIFF 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibTIFF是LibTIFF组织的一个读写TIFF图像格式的文件处理库。 LibTIFF存在缓冲区错误漏洞，该漏洞源于tiff2pdf工具处理特制BigTIFF文件时发生整数截断错误，导致64位StripByteCounts值被截断为32位整数，造成内存分配不足并引发越界内存复制，可能导致崩溃和严重内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Hardened Images 4.7.2-2.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red Hat Red Hat Ceph Storage 4 - cpe:/a:redhat:ceph_storage:4
Red Hat Red Hat Ceph Storage 6 - cpe:/a:redhat:ceph_storage:6
Red Hat Red Hat Ceph Storage 7 - cpe:/a:redhat:ceph_storage:7
Red Hat Red Hat Ceph Storage 8 - cpe:/a:redhat:ceph_storage:8
Red Hat Red Hat Ceph Storage 9 - cpe:/a:redhat:ceph_storage:9
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Hardened Images - cpe:/a:redhat:hummingbird:1

II. Public POCs for CVE-2026-18495

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-18495

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-18495 (1)

Vendor Advisories for CVE-2026-18495 (3)

Same Patch Batch · Red Hat · 2026-09-11 · 5 CVEs total

CVE-2026-89329 6.2 MEDIUM Device-mapper-multipath: local denial of service via blocking ipc send operations
CVE-2026-77159 5.5 MEDIUM Libvirt: unsafe chown in qemutpmemulatorpreparehost() allows arbitrary file ownership chan
CVE-2026-89298 4.9 MEDIUM Keycloak-services: keycloak-services: confidential client secret disclosed to view-clients
CVE-2026-88914 4.4 MEDIUM Gstreamer1-plugins-good: gstreamer: integer overflow and out-of-bounds read in qtdemux cea

IV. Related Vulnerabilities

Same product: Red Hat Hardened Images
Same vendor: Red Hat
Same weakness: CWE-122

V. Comments for CVE-2026-18495

No comments yet

Leave a comment