CVE-2025-56752
CRITICALCVSS 9.4/10EPSS 0.50%
Last modified
CVE-2025-56752 is a critical-severity vulnerability rated 9.4/10 on the CVSS scale. A vulnerability in the Ruijie RG-ES series switch firmware ESW_1.0(1)B1P39 enables remote attackers to fully bypass authentication mechanisms, providing them with unrestricted access to alter administrative settings and potentially seize control of affected devices via crafted HTTP POST request to /user.cgi.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.
Description
A vulnerability in the Ruijie RG-ES series switch firmware ESW_1.0(1)B1P39 enables remote attackers to fully bypass authentication mechanisms, providing them with unrestricted access to alter administrative settings and potentially seize control of affected devices via crafted HTTP POST request to /user.cgi.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ruijie | Rg-Es228gs-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es228gs-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es228gs-P Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es209gc-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es209gc-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es209gc-P Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es205gc-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es205gc-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es205gc-P Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es205gc Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es205gc Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es205gc Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es208gc Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es208gc Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es208gc Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es206gs-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es206gs-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es206gs-P Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es210gs-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es210gs-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es210gs-P Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es218gc-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es218gc-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es226gc-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es226gc-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es206gc-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es206gc-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es216gc Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es224gc Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es210gc-Lp Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es206mg-P Firmware | esw_1.0\(1\)b1p42_release\(12142711\) |
| Ruijie | Rg-Es209mg-P Firmware | esw_1.0\(1\)b1p42_release\(12142711\) |
| Ruijie | Rg-Nis2100-8gt2sfp-Hp Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Nis2100-4gt2sfp-Hp Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es216gc-V2 Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es216gc-V2 Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es216gc-V2 Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es224gc-V2 Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es224gc-V2 Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es224gc-V2 Firmware | esw_1.0\(1\)b1p39 |
| Ruijie | Rg-Es220gs-P Firmware | esw_1.0\(1\)b1p27 |
| Ruijie | Rg-Es220gs-P Firmware | esw_1.0\(1\)b1p35 |
| Ruijie | Rg-Es220gs-P Firmware | esw_1.0\(1\)b1p39 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-56752?
A vulnerability in the Ruijie RG-ES series switch firmware ESW_1.0(1)B1P39 enables remote attackers to fully bypass authentication mechanisms, providing them with unrestricted access to alter administrative settings and potentially seize control of affected devices via crafted HTTP POST request to /user.cgi.
How severe is CVE-2025-56752?
CVE-2025-56752 has a CVSS score of 9.4/10 (CRITICAL severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.
How do I fix CVE-2025-56752?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2025-56752?
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