CVE-2026-4775
Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
11th
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.
| CWE | CWE-190 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Mar 24, 2026 |
| Last Updated | May 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.4 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Hardened Images
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:12265 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:12271 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:14929 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:16055 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19150 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19363 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19585 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19586 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19604 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19608 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19609 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19657 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19659 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19702 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:20583 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:20585 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:20591 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:20592 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-4775 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2450768 lists.debian.org: https://lists.debian.org/debian-lts-announce/2026/04/msg00016.html
Credits
Red Hat would like to thank PrymEvol and Quang Luong for reporting this issue.