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CVE-2018-20396

31
FAUCET Score

CVE-2018-20396 is a critical vulnerability affecting NET&SYS MNG2120J and MNG6300 devices, allowing remote attackers to discover credentials through specific SNMP requests. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without authentication or user interaction, leading to complete compromise of confidentiality, integrity, and availability. While there are no known public exploits or active exploitation, the vulnerability has garnered significant community discussion, indicating potential interest from threat actors.

Impacted Technologies

VendorProductVersion(s)CPE
5.76.1006cCPE matchmatch criteria
cpe:2.3:o:telaum:ming2120j_firmware:5.76.1006c:*:*:*:*:*:*:*
5.83.6305jrc2CPE matchmatch criteria
cpe:2.3:o:telaum:ming6300_firmware:5.83.6305jrc2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 58th percentile among its peer group of 36,897 CVEs.

Social Chatter

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.

Media 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

Remediation records are not available for this CVE.

References

github.com / ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv
Third Party Advisory
misteralfa-hack.blogspot.com / 2018/12/stringbleed-y-ahora-que-passwords-leaks.html
ExploitThird Party Advisory