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CVE-2026-4775— Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
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开源的一个读写TIFF（标签图像文件格式）文件的库。该库包含一些处理TIFF文件的命令行工具。 LibTIFF存在输入验证错误漏洞，该漏洞源于putcontig8bitYCbCr44tile函数存在整数溢出，可能导致越界堆写入、拒绝服务或执行任意代码。

CVSS 7.8 · High EPSS 0.38% · P29

Affected Version Matrix 37

VendorProduct Version RangeStatus
Red Hat Red Hat AI Inference Server 3.2 1780681984< * unaffected
Red Hat Red Hat AI Inference Server 3.3 1782352950< * unaffected
1782352919< * unaffected
1782353093< * unaffected
1782352847< * unaffected
Red Hat Red Hat Enterprise Linux 10 0:4.6.0-6.el10_1.3< * unaffected
0:4.6.0-8.el10_2.1< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:4.6.0-6.el10_0.3< * unaffected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:3.9.4-12.el7_9.2< * unaffected
0:4.0.3-35.el7_9.2< * unaffected
Red Hat Red Hat Enterprise Linux 8 0:4.0.9-37.el8_10< * unaffected
0:3.9.4-15.el8_10< * unaffected
0:4.0.9-4.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:4.0.9-18.el8_4.2< * unaffected
0:3.9.4-13.el8_4.2< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:4.0.9-18.el8_4.2< * unaffected
0:3.9.4-13.el8_4.2< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:4.0.9-21.el8_6.2< * unaffected
0:3.9.4-13.el8_6.2< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:4.0.9-21.el8_6.2< * unaffected
0:3.9.4-13.el8_6.2< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:4.0.9-21.el8_6.2< * unaffected
0:3.9.4-13.el8_6.2< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:4.0.9-29.el8_8.2< * unaffected
0:3.9.4-13.el8_8.2< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:4.0.9-29.el8_8.2< * unaffected
0:3.9.4-13.el8_8.2< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:4.4.0-15.el9_7.3< * unaffected
0:4.4.0-18.el9_8< * unaffected
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:4.2.0-3.el9_0.3< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:4.4.0-8.el9_2.5< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:4.4.0-12.el9_4.5< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:4.4.0-13.el9_6.4< * unaffected
Red Hat Red Hat Hardened Images 4.7.1-2.2.hum1< * unaffected
4.7.1-2.3.hum1< * unaffected
Red Hat Red Hat OpenShift AI 3.4 1790703542< * unaffected
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I. Basic Information for CVE-2026-4775

Vulnerability Information
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Vulnerability Title
Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
LibTIFF 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibTIFF是LibTIFF开源的一个读写TIFF（标签图像文件格式）文件的库。该库包含一些处理TIFF文件的命令行工具。 LibTIFF存在输入验证错误漏洞，该漏洞源于putcontig8bitYCbCr44tile函数存在整数溢出，可能导致越界堆写入、拒绝服务或执行任意代码。
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 Enterprise Linux 10 0:4.6.0-6.el10_1.3 ~ * cpe:/o:redhat:enterprise_linux:10.1
Red Hat Red Hat Enterprise Linux 10 0:4.6.0-8.el10_2.1 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:4.6.0-6.el10_0.3 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:3.9.4-12.el7_9.2 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:4.0.3-35.el7_9.2 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 0:4.0.9-37.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:3.9.4-15.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:4.0.9-4.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:4.0.9-18.el8_4.2 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:3.9.4-13.el8_4.2 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:4.0.9-18.el8_4.2 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:3.9.4-13.el8_4.2 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:4.0.9-21.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:3.9.4-13.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:4.0.9-21.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:3.9.4-13.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:4.0.9-21.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:3.9.4-13.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:4.0.9-29.el8_8.2 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:3.9.4-13.el8_8.2 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:4.0.9-29.el8_8.2 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:3.9.4-13.el8_8.2 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 9 0:4.4.0-15.el9_7.3 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:4.4.0-18.el9_8 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:4.2.0-3.el9_0.3 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:4.4.0-8.el9_2.5 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:4.4.0-12.el9_4.5 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:4.4.0-13.el9_6.4 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat AI Inference Server 3.2 1780681984 ~ * cpe:/a:redhat:ai_inference_server:3.2::el9
Red Hat Red Hat AI Inference Server 3.3 1782352950 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9

II. Public POCs for CVE-2026-4775

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III. Intelligence Information for CVE-2026-4775

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Vendor Advisories for CVE-2026-4775 (27)

Other References for CVE-2026-4775 (2)

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-190

V. Comments for CVE-2026-4775

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