CVE-2016-4521 describes a critical vulnerability affecting Sixnet BT-5xxx and BT-6xxx M2M devices running firmware versions prior to 3.8.21 and 3.9.8, respectively. The flaw stems from hardcoded credentials, enabling remote attackers to gain unauthorized access through unspecified vectors. With a CVSS v3 score of 9.8 (Critical), this vulnerability presents a significant risk due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. The EPSS score is low, indicating a low probability of exploitation in the wild. Currently, there is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting a lack of widespread attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.8.20CPE matchmatch criteria | cpe:2.3:o:sixnet:bt-5_series_cellular_router_firmware:*:*:*:*:*:*:*:* | ||
<= 3.9.7CPE matchmatch criteria | cpe:2.3:o:sixnet:bt-5_series_cellular_router_firmware:*:*:*:*:*:*:*:* | ||
<= 3.8.20CPE matchmatch criteria | cpe:2.3:o:sixnet:bt-6_series_cellular_router_firmware:*:*:*:*:*:*:*:* | ||
<= 3.9.7CPE matchmatch criteria | cpe:2.3:o:sixnet:bt-6_series_cellular_router_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.