Description
lib/xymond_ipc.c in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 use weak permissions (666) for an unspecified IPC message queue, which allows local users to inject arbitrary messages by writing to that queue.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xymon | 4.3.25-1 | — |
| Debian 13 | xymon | 4.3.25-1 | — |
| Debian 12 | xymon | 4.3.25-1 | — |
| Debian 8 | xymon | 4.3.17-6+deb8u1 | DSA-3495-1 |
Advisories 1
- DSA-3495-1 xymon - security update Debian Security (DSA / DLA) · Mar 9, 2026