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CVE-2023-3373

22
FAUCET Score

CVE-2023-3373 is a critical vulnerability affecting Mitsubishi Electric GOT2000 Series GT21 and GOT SIMPLE Series GS21 models prior to version 01.49.000. This flaw allows a remote, unauthenticated attacker to guess the listening port of an FTP server's data connection due to predictable values. With a CVSS score of 9.1 (CRITICAL), successful exploitation can lead to session hijacking, enabling data connection manipulation, or a denial-of-service condition by preventing legitimate users from connecting. Currently, there is no evidence of active exploitation, nor is public exploit code or significant community discussion available.

Impacted Technologies

VendorProductVersion(s)CPE
< 01.50.000CPE matchmatch criteria
cpe:2.3:o:mitsubishielectric:gt21_firmware:*:*:*:*:*:*:*:*
< 01.50.000CPE matchmatch criteria
cpe:2.3:o:mitsubishielectric:gs21_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.75%
Probability of exploitation in next 30 days
EPSS Percentile
51.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0075 is in the 34th percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

jvn.jp / vu/JVNVU92167394/index.html
Third Party Advisory
cisa.gov / news-events/ics-advisories/icsa-23-215-01
Third Party AdvisoryUS Government Resource
mitsubishielectric.com / en/psirt/vulnerability/pdf/2023-006_en.pdf
Vendor Advisory