CVE-2026-4775 Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing
Remote attackers can trigger arbitrary code execution or denial of service via a crafted TIFF file exploiting a signed integer overflow in libtiff.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-4775?
CVE-2026-4775 is a high-severity vulnerability in Debian Debian Linux, published on 24 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-190
Which versions are affected by CVE-2026-4775?
It affects 13 products.
Linux distribution packages (40)
libtiff AlmaLinux:10 | All versions | 4.6.0-6.el10_1.3 |
libtiff AlmaLinux:10 | All versions | 4.6.0-8.el10_2.1 |
libtiff-devel AlmaLinux:10 | All versions | 4.6.0-6.el10_1.3 |
libtiff-devel AlmaLinux:10 | All versions | 4.6.0-8.el10_2.1 |
libtiff-tools AlmaLinux:10 | All versions | 4.6.0-6.el10_1.3 |
libtiff-tools AlmaLinux:10 | All versions | 4.6.0-8.el10_2.1 |
compat-libtiff3 AlmaLinux:8 | All versions | 3.9.4-15.el8_10 |
libtiff AlmaLinux:8 | All versions | 4.0.9-37.el8_10 |
libtiff-devel AlmaLinux:8 | All versions | 4.0.9-37.el8_10 |
libtiff-tools AlmaLinux:8 | All versions | 4.0.9-37.el8_10 |
mingw32-libtiff AlmaLinux:8 | All versions | 4.0.9-4.el8_10 |
mingw32-libtiff-static AlmaLinux:8 | All versions | 4.0.9-4.el8_10 |
mingw64-libtiff AlmaLinux:8 | All versions | 4.0.9-4.el8_10 |
mingw64-libtiff-static AlmaLinux:8 | All versions | 4.0.9-4.el8_10 |
libtiff AlmaLinux:9 | All versions | 4.4.0-15.el9_7.3 |
libtiff AlmaLinux:9 | All versions | 4.4.0-18.el9_8 |
libtiff-devel AlmaLinux:9 | All versions | 4.4.0-15.el9_7.3 |
libtiff-devel AlmaLinux:9 | All versions | 4.4.0-18.el9_8 |
libtiff-tools AlmaLinux:9 | All versions | 4.4.0-15.el9_7.3 |
libtiff-tools AlmaLinux:9 | All versions | 4.4.0-18.el9_8 |
libtiff Red Hat:enterprise_linux:10.1 | All versions | 0:4.6.0-6.el10_1.3 |
libtiff-debuginfo Red Hat:enterprise_linux:10.1 | All versions | 0:4.6.0-6.el10_1.3 |
libtiff-debugsource Red Hat:enterprise_linux:10.1 | All versions | 0:4.6.0-6.el10_1.3 |
libtiff-devel Red Hat:enterprise_linux:10.1 | All versions | 0:4.6.0-6.el10_1.3 |
libtiff-tools Red Hat:enterprise_linux:10.1 | All versions | 0:4.6.0-6.el10_1.3 |
libtiff-tools-debuginfo Red Hat:enterprise_linux:10.1 | All versions | 0:4.6.0-6.el10_1.3 |
libtiff Red Hat:enterprise_linux:10.2 | All versions | 0:4.6.0-8.el10_2.1 |
libtiff-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:4.6.0-8.el10_2.1 |
libtiff-debugsource Red Hat:enterprise_linux:10.2 | All versions | 0:4.6.0-8.el10_2.1 |
libtiff-devel Red Hat:enterprise_linux:10.2 | All versions | 0:4.6.0-8.el10_2.1 |
libtiff-tools Red Hat:enterprise_linux:10.2 | All versions | 0:4.6.0-8.el10_2.1 |
libtiff-tools-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:4.6.0-8.el10_2.1 |
compat-libtiff3 Red Hat:enterprise_linux:8::appstream | All versions | 0:3.9.4-15.el8_10 |
compat-libtiff3-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:3.9.4-15.el8_10 |
compat-libtiff3-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:3.9.4-15.el8_10 |
libtiff Red Hat:enterprise_linux:8::appstream | All versions | 0:4.0.9-37.el8_10 |
libtiff-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:4.0.9-37.el8_10 |
libtiff-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:4.0.9-37.el8_10 |
libtiff-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:4.0.9-37.el8_10 |
libtiff-tools-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:4.0.9-37.el8_10 |
Products include Debian Debian Linux, Libtiff Libtiff, Redhat Ai Inference Server, Redhat Codeready Linux Builder, Redhat Codeready Linux Builder Eus, Redhat Enterprise Linux and 7 more.
How do I fix CVE-2026-4775?
Apply the vendor's patch.
Is CVE-2026-4775 being exploited?
There is no known exploitation of CVE-2026-4775 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2026-4775, ALSA-2026:12265, ALSA-2026:12271, ALSA-2026:14929, ALSA-2026:16055, ALSA-2026:19150 and 52 more.