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CVE-2023-27389

23
FAUCET Score

CVE-2023-27389 is a high-severity vulnerability (CVSS 7.2) affecting CONPROSYS IoT Gateway products, specifically M2M Gateways, M2M Controllers Integrated Type, and M2M Controllers Configurable Type running older firmware versions. The flaw stems from inadequate encryption strength (CWE-326), allowing a remote authenticated attacker with administrative privileges to upload a malicious firmware update. This can lead to data alteration, denial-of-service, or arbitrary code execution on the affected devices. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.7.10CPE matchmatch criteria
cpe:2.3:o:contec:cps-mg341-adsc1-111_firmware:*:*:*:*:*:*:*:*
<= 3.7.10CPE matchmatch criteria
cpe:2.3:o:contec:cps-mg341-adsc1-931_firmware:*:*:*:*:*:*:*:*
<= 3.7.10CPE matchmatch criteria
cpe:2.3:o:contec:cps-mg341g-adsc1-111_firmware:*:*:*:*:*:*:*:*
<= 3.7.10CPE matchmatch criteria
cpe:2.3:o:contec:cps-mg341g-adsc1-930_firmware:*:*:*:*:*:*:*:*
<= 3.7.10CPE matchmatch criteria
cpe:2.3:o:contec:cps-mg341g5-adsc1-931_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 18th percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 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

jvn.jp / en/vu/JVNVU96198617
Third Party Advisory
contec.com / api/downloadlogger
MitigationVendor Advisory
contec.com / download/donwload-list
Product
contec.com / download/donwload-list
Product
contec.com / download/donwload-list
Product