Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Magick.NET-Q16 packages before 14.10.4 are vulnerable to a heap buffer overflow in the XWD image writer, caused by a 32-bit integer overflow in a line-size calculation. The source gives few details on attacker requirements, but writing an extremely large image can cause an out-of-bounds heap write. Upgrade to version 14.10.4 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.8 | Medium | 3.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0012, the 1st percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:22 UTC First seen by agentprime
- 31 Oct 2026, 15:22 UTC Confirmed by OSV