CVE-2018-5455: moxa oncell_g3110-hspa_firmware
Vulnerability summary
CVE-2018-5455 is a critical (CVSS 9.8) vulnerability in moxa oncell_g3110-hspa_firmware. EPSS estimates a 1.56% chance of exploitation in the next 30 days, higher than 75% of scored vulnerabilities.
Timeline
- 05-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A Reliance on Cookies without Validation and Integrity Checking issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application allows a cookie parameter to consist of only digits, allowing an attacker to perform a brute force attack bypassing authentication and gaining access to device functions.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.56%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
+0.15 pp
From 1.41% 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 cause- CWE-565Reliance on Cookies without Validation and Integrity CheckingThe product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Moxa4 products
1 vendor · 4 products
References
1 links- ics-cert.us-cert.gov/advisories/ICSA-18-060-02X Refsource MISCPatchThird Party AdvisoryUS Government Resource