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CVE-2012-3039

21
FAUCET Score

CVE-2012-3039 describes an insufficient entropy vulnerability in Moxa OnCell Gateway G3111, G3151, G3211, and G3251 devices with firmware before version 1.4, making SSH and SSL keys predictable. This vulnerability has a CVSS score of 7.1, indicating high severity due to its network-based attack vector, high complexity, and complete compromise of confidentiality, integrity, and availability. While the EPSS score is low and it is not listed in CISA's KEV catalog, there is no public exploit code or active exploitation reported, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.3CPE matchmatch criteria
cpe:2.3:o:moxa:oncell_gateway_firmware:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:moxa:oncell_gateway_g3111:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:moxa:oncell_gateway_g3151:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:moxa:oncell_gateway_g3211:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:moxa:oncell_gateway_g3251:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:H/Au:S/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
SINGLE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.40%
Probability of exploitation in next 30 days
EPSS Percentile
69.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0140 is in the 66th percentile among its peer group of 1,162 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ics-cert.us-cert.gov / advisories/ICSA-13-217-01
US Government Resource