CRITICAL
ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header
Published Jan 23, 2017
9.8
CRITICALCVSS 3.0
EPSS 87.04%
Description
ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.
Affected products
No data.
OR
- 5.2
- 5.2
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.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
87.04% 0.87040
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.87040
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 (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 87.04% (0.87040) | 99.74th | v5 (v2026.06.15) |
| Sep 22, 2026 | 87.04% (0.87040) | 99.74th | v5 (v2026.06.15) |
| Sep 21, 2026 | 48.80% (0.48798) | 98.86th | v5 (v2026.06.15) |
| Sep 6, 2026 | 87.04% (0.87040) | 99.74th | v5 (v2026.06.15) |
| Sep 5, 2026 | 48.80% (0.48798) | 98.83th | v5 (v2026.06.15) |
| Aug 30, 2026 | 87.04% (0.87040) | 99.73th | v5 (v2026.06.15) |
| Aug 28, 2026 | 48.80% (0.48798) | 98.82th | v5 (v2026.06.15) |
| Aug 24, 2026 | 87.04% (0.87040) | 99.73th | v5 (v2026.06.15) |
| Aug 23, 2026 | 48.80% (0.48798) | 98.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 86.93% (0.86926) | 99.72th | v5 (v2026.06.15) |
| Aug 17, 2025 | 70.32% (0.70316) | 98.62th | v4 (v2025.03.14) |
| Mar 30, 2025 | 85.56% (0.85558) | 99.33th | v4 (v2025.03.14) |
| Mar 29, 2025 | 81.75% (0.81747) | 98.97th | v4 (v2025.03.14) |
| Mar 17, 2025 | 85.56% (0.85558) | 99.33th | v4 (v2025.03.14) |
| Dec 17, 2024 | 41.49% (0.41488) | 97.35th | v3 (v2023.03.01) |
| Dec 12, 2024 | 95.42% (0.95419) | 99.46th | v3 (v2023.03.01) |
| Jun 1, 2024 | 95.20% (0.95202) | 99.34th | v3 (v2023.03.01) |
| Oct 6, 2023 | 95.92% (0.95918) | 99.26th | v3 (v2023.03.01) |
| Jul 20, 2023 | 95.60% (0.95597) | 99.11th | v3 (v2023.03.01) |
| Apr 29, 2023 | 95.86% (0.95860) | 99.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.25% (0.96249) | 99.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.76% (0.04765) | 89.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.76% (0.04765) | 88.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.76% (0.04765) | 74.54th | v2 (v2022.01.01) |
Weaknesses (1)
References (8)
- http://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2016/Aug/54 mailing-listx_refsource_FULLDISCExploitMailing ListThird Party Advisory
- http://www.securityfocus.com/archive/1/539159/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/92402 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://blogs.securiteam.com/index.php/archives/2712 x_refsource_MISCExploitTechnical DescriptionThird Party Advisory
- https://forums.webnms.com/topic/recent-vulnerabilities-in-webnms-and-how-to-protect-the-server-against-them x_refsource_CONFIRM
- https://github.com/pedrib/PoC/blob/master/advisories/webnms-5.2-sp1-pwn.txt x_refsource_MISCExploitThird Party Advisory
- https://www.exploit-db.com/exploits/40229/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| http://seclists.org/fulldisclosure/2016/Aug/54 | mailing-listx_refsource_FULLDISCExploitMailing ListThird Party Advisory | |
| http://www.securityfocus.com/archive/1/539159/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/92402 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://blogs.securiteam.com/index.php/archives/2712 | x_refsource_MISCExploitTechnical DescriptionThird Party Advisory | |
| https://forums.webnms.com/topic/recent-vulnerabilities-in-webnms-and-how-to-protect-the-server-against-them | x_refsource_CONFIRM | |
| https://github.com/pedrib/PoC/blob/master/advisories/webnms-5.2-sp1-pwn.txt | x_refsource_MISCExploitThird Party Advisory | |
| https://www.exploit-db.com/exploits/40229/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 23, 2017
Updated Aug 6, 2024
Reserved Aug 4, 2016
Link CVE-2016-6603
CISA Vulnrichment
Updated n/a