Auth bypass in Ruijie Rg-Es205gc
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Ruijie Rg-Es205gc
- Ruijie Rg-Es205gc Firmware — versions esw_1.0\(1\)b1p39, esw_1.0(1)b1p39, esw_1.0(1)b1p27
- Ruijie Rg-Es205gc-P
- Ruijie Rg-Es205gc-P Firmware — versions esw_1.0\(1\)b1p39, esw_1.0(1)b1p39, esw_1.0(1)b1p27
- Ruijie Rg-Es206gc-P
- Ruijie Rg-Es206gc-P Firmware — versions esw_1.0(1)b1p27, esw_1.0\(1\)b1p27, esw_1.0\(1\)b1p35
- Ruijie Rg-Es206gs-P
- Ruijie Rg-Es206gs-P Firmware — versions esw_1.0\(1\)b1p39, esw_1.0(1)b1p39, esw_1.0(1)b1p27
- Ruijie Rg-Es206mg-P
- Ruijie Rg-Es206mg-P Firmware — versions esw_1.0(1)b1p42_release(12142711), esw_1.0\(1\)b1p42_release\(12142711\)
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/TNCX-byte/Vulnerability_Research/blob/main/CVE-2025-56752/README.md (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-56752?
- CVE-2025-56752 is a critical-severity vulnerability in Ruijie Rg-Es205gc, classified under Improper Authentication. CVSS score: 9.4/10. Published 2025-09-03.
- How severe is CVE-2025-56752?
- Critical severity. CVSS v3 base score is 9.4 out of 10.
- Is CVE-2025-56752 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.