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CVE-2025-9900 — A flaw was found in Libtiff.
Unknown · Unknown · Published 23 Sept 2025 · Modified 26 Sept 2026
Description
A flaw was found in Libtiff. This vulnerability is a "write-what-where" condition, triggered when the library processes a specially crafted TIFF image file. By providing an abnormally large image height value in the file's metadata, an attacker can trick the library into writing attacker-controlled color data to an arbitrary memory location. This memory corruption can be exploited to cause a denial of service (application crash) or to achieve arbitrary code execution with the permissions of the user.
References
- https://access.redhat.com/errata/RHSA-2025:17651
- https://access.redhat.com/errata/RHSA-2025:17675
- https://access.redhat.com/errata/RHSA-2025:17710
- https://access.redhat.com/errata/RHSA-2025:17738
- https://access.redhat.com/errata/RHSA-2025:17739
- https://access.redhat.com/errata/RHSA-2025:17740
- https://access.redhat.com/errata/RHSA-2025:19113
- https://access.redhat.com/errata/RHSA-2025:19156
- https://access.redhat.com/errata/RHSA-2025:19276
- https://access.redhat.com/errata/RHSA-2025:19906
What to do
- Check whether Unknown is in your asset inventory.
- Patch in the next maintenance window; prioritise internet-facing systems.
- Record the decision in your risk register for audit evidence.
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Link: adminadda.com/cve/CVE-2025-9900