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CVE-2020-5598

20
FAUCET Score

CVE-2020-5598 is an improper access control vulnerability in the TCP/IP function of Mitsubishi Electric GOT2000 series HMI firmware (CoreOS -Y and earlier for GT27, GT25, and GT23 models). This vulnerability allows a remote, unauthenticated attacker to bypass access restrictions. A successful exploit, requiring low attack complexity, could lead to denial of service by stopping network functions or the execution of malicious programs, resulting in a high impact on integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= yCPE matchmatch criteria
cpe:2.3:o:mitsubishielectric:coreos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.81%
Probability of exploitation in next 30 days
EPSS Percentile
76.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0181 is in the 59th percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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/JVNVU95413676/index.html
Third Party Advisory
mitsubishielectric.com / en/psirt/vulnerability/pdf/2020-005_en.pdf
Vendor Advisory