CVE-2025-1679: moxa tn-4500a series Cross-site Scripting
Vulnerability summary
CVE-2025-1679 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in moxa tn-4500a series. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.4% of scored vulnerabilities.
Timeline
- 23-10-2025PublishedVulnerability first disclosed.
- 23-10-2025Last modifiedVulnerability information updated.
Description
Cross-site Scripting has been identified in Moxa’s Ethernet switches, which allows an authenticated administrative attacker to inject malicious scripts to an affected device’s web service that could impact authenticated users interacting with the device’s web interface. This vulnerability is classified as stored cross-site scripting (XSS); attackers inject malicious scripts into the system, and the scripts persist across sessions. There is no impact to the confidentiality, integrity, and availability of the affected device; no loss of availability within any subsequent systems but has some loss of confidentiality and integrity within the subsequent system.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST4.8MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
+0.02 pp
From 0.30% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Moxa4 products
- tn-4500a series≥ 1.0, ≤ 3.13
- tn-5500a series≥ 1.0, ≤ 3.13
- tn-g4500 series≥ 1.0, ≤ 5.5
- tn-g6500 series≥ 1.0, ≤ 5.5
1 vendor · 4 products
References
2 links- www.moxa.com/en/…Vendor Advisory
- www.hackrtu.com/blog/cg-technical-en-003/Technical Description