Auth bypass in Moxa Tn-5900
CVE-2023-33237
TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (49.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Moxa Tn-5900
- Moxa Tn-5900 Firmware
- Moxa Tn-5900 Series — versions 1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.moxa.com/en/support/product-support/security-advisory/mpsa-230402-tn-5900-a… (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-33237?
- CVE-2023-33237 is a high-severity vulnerability in Moxa Tn-5900, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2023-08-17.
- How severe is CVE-2023-33237?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-33237 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.