Vulnerability · Published May 27, 2026 · Assigned by mitre
CVE-2025-70103
High 7.3
In plain English
A high-severity heap buffer overflow in the jpeg-xl package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.4%top 62.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Heap buffer overflow vulnerability in libjxl 0.12.0 via crafted PBM images to the jxl::extras::DecodeImagePNM function in file lib/extras/dec/pnm.cc.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | jpeg-xl | no fix listed | DEBIAN-CVE-2025-70103 |
| Debian:13 | jpeg-xl | 0.11.2-0.1~deb13u2 | DEBIAN-CVE-2025-70103 |
| Debian:14 | jpeg-xl | 0.11.2-5.1 | DEBIAN-CVE-2025-70103 |
| Ubuntu:25.10 | jpeg-xl | 0.11.1-6ubuntu1.2 | USN-8397-1 |
| Ubuntu:25.10 | jpeg-xl | 0.11.1-6ubuntu1.2 | UBUNTU-CVE-2025-70103 |
| Ubuntu:26.04:LTS | jpeg-xl | 0.11.1-6ubuntu4.2 | USN-8397-1 |
| Ubuntu:26.04:LTS | jpeg-xl | 0.11.1-6ubuntu4.2 | UBUNTU-CVE-2025-70103 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L