CVE-2016-2056 EXPLOIT
8.8
HIGH · CVSS 3.0 · EPSS 54.5% (pctl 99)
Patch early
A public exploit exists.
Description
xymond in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow remote authenticated users to execute arbitrary commands via shell metacharacters in the adduser_name argument in (1) web/useradm.c or (2) web/chpasswd.c.
Scoring
| CVSS | 8.8 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 54.51% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-77 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2016-04-13 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| debian | debian linux |
| xymon | xymon |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Xymon 4.3.25 - useradm Command Execution (Metasploit) | 2019-07-12 |
References
- http://packetstormsecurity.com/files/135758/Xymon-4.3.x-Buffer-Overflow-Code-Execution-Information-Disclosure.html
- http://packetstormsecurity.com/files/153620/Xymon-useradm-Command-Execution.html
- http://www.debian.org/security/2016/dsa-3495
- http://www.securityfocus.com/archive/1/537522/100/0/threaded
- https://sourceforge.net/p/xymon/code/7892/
- http://packetstormsecurity.com/files/135758/Xymon-4.3.x-Buffer-Overflow-Code-Execution-Information-Disclosure.html
- http://packetstormsecurity.com/files/153620/Xymon-useradm-Command-Execution.html
- http://www.debian.org/security/2016/dsa-3495
- http://www.securityfocus.com/archive/1/537522/100/0/threaded
- https://sourceforge.net/p/xymon/code/7892/
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