CVE-2023-3373

Q: How do I fix CVE-2023-3373?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Q: Is CVE-2023-3373 being actively exploited?

Not that we know of. CVE-2023-3373 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.0% is the estimated probability that it will be exploited in the next 30 days. That is higher than 60% of all scored CVEs.

Q: How severe is CVE-2023-3373?

CVE-2023-3373 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2023-3373 affect?

Published advisories record a fix for gs21 firmware (NVD), gt21 firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

5.9

CVSS v3

NVD

Description

Predictable Exact Value from Previous Values vulnerability in Mitsubishi Electric Corporation GOT2000 Series GT21 model versions 01.49.000 and prior and GOT SIMPLE Series GS21 model versions 01.49.000 and prior allows a remote unauthenticated attacker to hijack data connections (session hijacking) or prevent legitimate users from establishing data connections (to cause DoS condition) by guessing the listening port of the data connection on FTP server and connecting to it.

CWE-342 CWE-330

How to fix

Remediation Available

gs21 firmwareNVD

Affected:< 01.50.000Fixed in:01.50.000CVE-2023-3373derived from NVD

gt21 firmwareNVD

Affected:< 01.50.000Fixed in:01.50.000CVE-2023-3373derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityLow

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

Exploit Intelligence

1.02%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Vendor Advisory1

mitsubishielectric.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-342 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16226	Critical	9.8	2.3%	-	-
CVE-2014-9196	High	7.6	2.3%	-	-
CVE-2022-27577	Critical	9.1	1.4%	-	Fix
CVE-2020-28388	Medium	6.5	1.4%	-	Fix
CVE-2022-29930	High	8.7	0.9%	-	-

Common questions

How do I fix CVE-2023-3373?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2023-3373 being actively exploited?

Not that we know of. CVE-2023-3373 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.0% is the estimated probability that it will be exploited in the next 30 days. That is higher than 60% of all scored CVEs.

How severe is CVE-2023-3373?

CVE-2023-3373 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-3373 affect?

Published advisories record a fix for gs21 firmware (NVD), gt21 firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.