Multiple cross-site scripting (XSS) vulnerabilities in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow (1) remote Xymon clients to inject arbitrary web script or HTML via a status-message, which is not properly handled in the "detailed status" page, or (2) remote authenticated users to inject arbitrary web script or HTML via an acknowledgement message, which is not properly handled in the "status" page.
Conclusion & alert: CVE-2016-2058 is rated Moderate Risk (45.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.22%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.24% | 1.22% | +0.98% |
| 2 | 2025-03-17 | 0.08% | 0.24% | +0.16% |
| 3 | 2023-03-07 | — | 0.08% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.4 | 3.0 | MEDIUM |
|
2.3 | 2.7 | [email protected] |
| 3.5 | 2.0 | LOW |
|
6.8 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-2058 not yet assigned priority: Debian including 1 source packages (xymon), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-2058 |
ubuntu
|
low | CVE-2016-2058 low priority: Ubuntu including 1 source packages (xymon), 11 status rows across 11 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, wily, xenial, yakkety, zesty): not-affected 7, ignored 2, DNE 1, released 1. | https://ubuntu.com/security/CVE-2016-2058 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| xymon | xymon | 4.1.0 | cpe:2.3:a:xymon:xymon:4.1.0:*:*:*:*:*:*:* |
| xymon | xymon | 4.1.1 | cpe:2.3:a:xymon:xymon:4.1.1:*:*:*:*:*:*:* |
| xymon | xymon | 4.1.2 | cpe:2.3:a:xymon:xymon:4.1.2:*:*:*:*:*:*:* |
| xymon | xymon | 4.1.2 | cpe:2.3:a:xymon:xymon:4.1.2:p1:*:*:*:*:*:* |
| xymon | xymon | 4.1.2 | cpe:2.3:a:xymon:xymon:4.1.2:p2:*:*:*:*:*:* |
| xymon | xymon | 4.2 | cpe:2.3:a:xymon:xymon:4.2:alfa:*:*:*:*:*:* |
| xymon | xymon | 4.2 | cpe:2.3:a:xymon:xymon:4.2:beta20060605:*:*:*:*:*:* |
| xymon | xymon | 4.2 | cpe:2.3:a:xymon:xymon:4.2:rc20060712:*:*:*:*:*:* |
| xymon | xymon | 4.2.0 | cpe:2.3:a:xymon:xymon:4.2.0:*:*:*:*:*:*:* |
| xymon | xymon | 4.2.2 | cpe:2.3:a:xymon:xymon:4.2.2:*:*:*:*:*:*:* |
| xymon | xymon | 4.2.2 | cpe:2.3:a:xymon:xymon:4.2.2:rc1:*:*:*:*:*:* |
| xymon | xymon | 4.2.3 | cpe:2.3:a:xymon:xymon:4.2.3:*:*:*:*:*:*:* |
| xymon | xymon | 4.2.3 | cpe:2.3:a:xymon:xymon:4.2.3:rc1:*:*:*:*:*:* |
| xymon | xymon | 4.3.0 | cpe:2.3:a:xymon:xymon:4.3.0:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.0 | cpe:2.3:a:xymon:xymon:4.3.0:beta1:*:*:*:*:*:* |
| xymon | xymon | 4.3.0 | cpe:2.3:a:xymon:xymon:4.3.0:beta2:*:*:*:*:*:* |
| xymon | xymon | 4.3.0 | cpe:2.3:a:xymon:xymon:4.3.0:beta3:*:*:*:*:*:* |
| xymon | xymon | 4.3.0 | cpe:2.3:a:xymon:xymon:4.3.0:rc1:*:*:*:*:*:* |
| xymon | xymon | 4.3.1 | cpe:2.3:a:xymon:xymon:4.3.1:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.2 | cpe:2.3:a:xymon:xymon:4.3.2:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.3 | cpe:2.3:a:xymon:xymon:4.3.3:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.4 | cpe:2.3:a:xymon:xymon:4.3.4:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.5 | cpe:2.3:a:xymon:xymon:4.3.5:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.6 | cpe:2.3:a:xymon:xymon:4.3.6:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.7 | cpe:2.3:a:xymon:xymon:4.3.7:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.8 | cpe:2.3:a:xymon:xymon:4.3.8:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.9 | cpe:2.3:a:xymon:xymon:4.3.9:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.10 | cpe:2.3:a:xymon:xymon:4.3.10:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.11 | cpe:2.3:a:xymon:xymon:4.3.11:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.12 | cpe:2.3:a:xymon:xymon:4.3.12:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.13 | cpe:2.3:a:xymon:xymon:4.3.13:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.14 | cpe:2.3:a:xymon:xymon:4.3.14:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.15 | cpe:2.3:a:xymon:xymon:4.3.15:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.16 | cpe:2.3:a:xymon:xymon:4.3.16:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.17 | cpe:2.3:a:xymon:xymon:4.3.17:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.18 | cpe:2.3:a:xymon:xymon:4.3.18:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.19 | cpe:2.3:a:xymon:xymon:4.3.19:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.19 | cpe:2.3:a:xymon:xymon:4.3.19:rc1:*:*:*:*:*:* |
| xymon | xymon | 4.3.20 | cpe:2.3:a:xymon:xymon:4.3.20:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.21 | cpe:2.3:a:xymon:xymon:4.3.21:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.22 | cpe:2.3:a:xymon:xymon:4.3.22:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.23 | cpe:2.3:a:xymon:xymon:4.3.23:*:*:*:*:*:*:* |
| xymon | xymon | 4.3.24 | cpe:2.3:a:xymon:xymon:4.3.24:*:*:*:*:*:*:* |