Vulnerability · Published Mar 10, 2025 · Assigned by mitre
CVE-2025-25977
Critical 9.8
In plain English
A critical-severity prototype pollution in the znuny package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.7%top 46.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue in canvg v.4.0.2 allows an attacker to execute arbitrary code via the Constructor of the class StyleElement.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | znuny | no fix listed | DEBIAN-CVE-2025-25977 |
| Debian:13 | znuny | no fix listed | DEBIAN-CVE-2025-25977 |
| Debian:14 | znuny | 6.5.24-1 | DEBIAN-CVE-2025-25977 |
| Ubuntu:22.04:LTS | otrs2 | no fix listed | UBUNTU-CVE-2025-25977 |
| Ubuntu:24.04:LTS | znuny | no fix listed | UBUNTU-CVE-2025-25977 |
| Ubuntu:26.04:LTS | znuny | no fix listed | UBUNTU-CVE-2025-25977 |
| Ubuntu:26.10 | znuny | no fix listed | UBUNTU-CVE-2025-25977 |
| npm | canvg | 3.0.11 | GHSA-v2mw-5mch-w8c5 |
| npm | canvg | 4.0.3 | GHSA-v2mw-5mch-w8c5 |
Affected products (as reported)
Weakness: CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H