HIGH
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
Published Apr 13, 2016
8.8
HIGHCVSS 3.0
EPSS 54.51%
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.
Affected products
No data.
Configuration 1
OR
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.2
- 4.1.2
- 4.2
- 4.2
- 4.2
- 4.2.0
- 4.2.2
- 4.2.2
- 4.2.3
- 4.2.3
- 4.3.0
- 4.3.0
- 4.3.0
- 4.3.0
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.3.5
- 4.3.6
- 4.3.7
- 4.3.8
- 4.3.9
- 4.3.10
- 4.3.11
- 4.3.12
- 4.3.13
- 4.3.14
- 4.3.15
- 4.3.16
- 4.3.17
- 4.3.18
- 4.3.19
- 4.3.19
- 4.3.20
- 4.3.21
- 4.3.22
- 4.3.23
- 4.3.24
Configuration 2
- 8.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.5 MEDIUM NVD
AV:N/AC:L/Au:S/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
54.51% 0.54507
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.54507
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (32 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 54.51% (0.54507) | 98.99th | v5 (v2026.06.15) |
| Sep 22, 2026 | 54.51% (0.54507) | 98.97th | v5 (v2026.06.15) |
| Sep 21, 2026 | 53.10% (0.53102) | 98.96th | v5 (v2026.06.15) |
| Sep 6, 2026 | 54.51% (0.54507) | 98.94th | v5 (v2026.06.15) |
| Sep 5, 2026 | 53.10% (0.53102) | 98.93th | v5 (v2026.06.15) |
| Aug 30, 2026 | 54.51% (0.54507) | 98.94th | v5 (v2026.06.15) |
| Aug 28, 2026 | 53.10% (0.53102) | 98.93th | v5 (v2026.06.15) |
| Aug 24, 2026 | 54.51% (0.54507) | 98.93th | v5 (v2026.06.15) |
| Aug 23, 2026 | 53.10% (0.53102) | 98.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 54.51% (0.54507) | 98.88th | v5 (v2026.06.15) |
| Sep 14, 2025 | 56.35% (0.56347) | 98.04th | v4 (v2025.03.14) |
| Jul 25, 2025 | 60.26% (0.60257) | 98.17th | v4 (v2025.03.14) |
| Mar 30, 2025 | 66.02% (0.66019) | 98.38th | v4 (v2025.03.14) |
| Mar 29, 2025 | 74.36% (0.74363) | 98.49th | v4 (v2025.03.14) |
| Mar 17, 2025 | 66.02% (0.66019) | 98.37th | v4 (v2025.03.14) |
| Dec 17, 2024 | 58.09% (0.58090) | 97.85th | v3 (v2023.03.01) |
| Sep 26, 2024 | 61.71% (0.61710) | 97.87th | v3 (v2023.03.01) |
| Jul 14, 2024 | 65.12% (0.65119) | 97.93th | v3 (v2023.03.01) |
| Jun 11, 2024 | 77.02% (0.77016) | 98.22th | v3 (v2023.03.01) |
| May 13, 2024 | 76.83% (0.76830) | 98.19th | v3 (v2023.03.01) |
| Apr 8, 2024 | 82.52% (0.82524) | 98.34th | v3 (v2023.03.01) |
| Mar 7, 2024 | 83.60% (0.83602) | 98.36th | v3 (v2023.03.01) |
| Feb 4, 2024 | 82.47% (0.82465) | 98.16th | v3 (v2023.03.01) |
| Jan 2, 2024 | 82.87% (0.82868) | 98.13th | v3 (v2023.03.01) |
| Nov 30, 2023 | 84.16% (0.84163) | 98.17th | v3 (v2023.03.01) |
| Oct 27, 2023 | 86.04% (0.86042) | 98.22th | v3 (v2023.03.01) |
| Sep 24, 2023 | 89.97% (0.89971) | 98.40th | v3 (v2023.03.01) |
| Aug 21, 2023 | 90.89% (0.90886) | 98.44th | v3 (v2023.03.01) |
| Jun 6, 2023 | 86.94% (0.86945) | 98.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 87.29% (0.87294) | 98.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 71.90% (0.71897) | 99.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 71.90% (0.71897) | 99.06th | v2 (v2022.01.01) |
Weaknesses (1)
References (5)
- http://packetstormsecurity.com/files/135758/Xymon-4.3.x-Buffer-Overflow-Code-Execution-Information-Disclosure.html x_refsource_MISC
- http://packetstormsecurity.com/files/153620/Xymon-useradm-Command-Execution.html x_refsource_MISC
- http://www.debian.org/security/2016/dsa-3495 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/archive/1/537522/100/0/threaded mailing-listx_refsource_BUGTRAQ
- https://sourceforge.net/p/xymon/code/7892/ x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/135758/Xymon-4.3.x-Buffer-Overflow-Code-Execution-Information-Disclosure.html | x_refsource_MISC | |
| http://packetstormsecurity.com/files/153620/Xymon-useradm-Command-Execution.html | x_refsource_MISC | |
| http://www.debian.org/security/2016/dsa-3495 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/archive/1/537522/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| https://sourceforge.net/p/xymon/code/7892/ | x_refsource_CONFIRMPatch |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 13, 2016
Updated Aug 5, 2024
Reserved Jan 25, 2016
Link CVE-2016-2056
CISA Vulnrichment
Updated n/a