CVE-2018-5455 describes a critical authentication bypass vulnerability in Moxa OnCell G3100-HSPA Series devices, specifically versions 1.4 Build 16062919 and prior. The flaw stems from a lack of validation and integrity checking on cookie parameters, allowing attackers to brute-force numeric cookie values to bypass authentication. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating that it is network-exploitable with low attack complexity, requiring no user interaction, and can lead to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.4CPE matchmatch criteria | cpe:2.3:o:moxa:oncell_g3110-hspa_firmware:*:*:*:*:*:*:*:* | ||
<= 1.4CPE matchmatch criteria | cpe:2.3:o:moxa:oncell_g3110-hspa-t_firmware:*:*:*:*:*:*:*:* | ||
<= 1.4CPE matchmatch criteria | cpe:2.3:o:moxa:oncell_g3150-hspa_firmware:*:*:*:*:*:*:*:* | ||
<= 1.4CPE matchmatch criteria | cpe:2.3:o:moxa:oncell_g3150-hspa-t_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.