Vulnerability · Published Aug 25, 2026 · Assigned by mitre
CVE-2026-52491
High 8.4
In plain English
A high-severity integer overflow in the tiff package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.4High
Exploit odds (30 days)0.2%top 91.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the libtiff/tools/thumbnail.c: main() component
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | tiff | no fix listed | DEBIAN-CVE-2026-52491 |
| Debian:13 | tiff | no fix listed | DEBIAN-CVE-2026-52491 |
| Debian:14 | tiff | 4.7.2-1 | DEBIAN-CVE-2026-52491 |
| Ubuntu:22.04:LTS | neuron | no fix listed | UBUNTU-CVE-2026-52491 |
| Ubuntu:22.04:LTS | tiff | no fix listed | UBUNTU-CVE-2026-52491 |
| Ubuntu:24.04:LTS | tiff | no fix listed | UBUNTU-CVE-2026-52491 |
| Ubuntu:26.04:LTS | tiff | no fix listed | UBUNTU-CVE-2026-52491 |
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H