CVE-2025-9900
Libtiff: libtiff write-what-where
HIGH 8.8
At a glance
- Source
- NVD
- EPSS
- EPSS 0.97 % · percentile 62 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Deferred
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.
Weaknesses (CWE)
- CWE-123 — Write-what-where Condition
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
- https://access.redhat.com/errata/RHSA-2025:19947
- https://access.redhat.com/errata/RHSA-2025:20956
- https://access.redhat.com/errata/RHSA-2025:20998
- https://access.redhat.com/errata/RHSA-2025:21060
- https://access.redhat.com/errata/RHSA-2025:21061
- https://access.redhat.com/errata/RHSA-2025:21062
- https://access.redhat.com/errata/RHSA-2025:21407
- https://access.redhat.com/errata/RHSA-2025:21506
- https://access.redhat.com/errata/RHSA-2025:21507
- https://access.redhat.com/errata/RHSA-2025:21508
- https://access.redhat.com/errata/RHSA-2025:21994
- https://access.redhat.com/errata/RHSA-2025:23078
- https://access.redhat.com/errata/RHSA-2025:23079
- https://access.redhat.com/errata/RHSA-2025:23080
- https://access.redhat.com/errata/RHSA-2026:0001
- https://access.redhat.com/errata/RHSA-2026:0076
- https://access.redhat.com/errata/RHSA-2026:0077
- https://access.redhat.com/errata/RHSA-2026:0078
- https://access.redhat.com/errata/RHSA-2026:3461
- https://access.redhat.com/errata/RHSA-2026:3462
- https://access.redhat.com/errata/RHSA-2026:7504
- https://access.redhat.com/security/cve/CVE-2025-9900
- https://bugzilla.redhat.com/show_bug.cgi?id=2392784
- https://github.com/SexyShoelessGodofWar/LibTiff-4.7.0-Write-What-Where?tab=readme-ov-file
- https://gitlab.com/libtiff/libtiff/-/issues/704
- https://gitlab.com/libtiff/libtiff/-/merge_requests/732
- https://libtiff.gitlab.io/libtiff/releases/v4.7.1.html
- https://lists.debian.org/debian-lts-announce/2025/09/msg00031.html
- http://www.openwall.com/lists/oss-security/2025/09/26/3
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | redhat |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2025-30917
- GCVE · GCVE-0-2025-9900
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0218 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0969 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0938 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
Affected products
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |