Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:LCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-3373 is a medium-severity Predictable Exact Value from Previous Values (CWE-342) vulnerability in Mitsubishielectric Gt21 Firmware. Its CVSS base score is 5.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique OS Credential Dumping (T1003); ranked in the top 37% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-44040
Vulnerability Data
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)…
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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(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 3 hardening rules · 2 OS baselines
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Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Key generation under controlled management uses approved random-bit sources rather than insufficiently random values.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require cryptographically secure, non-predictable value generation and thereby prevent this weakness.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Cryptographic controls require use of approved, unpredictable RNGs, directly mitigating predictable-value weaknesses.
A.8.25 requires a secure SDLC process with checkpoints, secure coding, testing and training; it does not itself stop prediction of exact values from prior outputs, which is a design/algorithm flaw that can still be exploited if present.
A.8.26 only requires that predictable-value requirements be identified during requirements gathering; it performs no act that stops exploitation of a predictable value that is present in the delivered application.
A.8.27 mandates establishing and applying secure engineering principles (including least privilege, security by design, distrust external input, and hardening) during the SDLC; this does not stop a predictable-value generator from being exploitable once written into the product.
Secure coding standards prohibit predictable random-value generation.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (higher-evidence rows only; rows rated `none` are excluded).
Oracle Linux 8 (1 rule)
- V-248600 OL 8 must have the packages required to use the hardware random number generator entropy gatherer service. blocks CWE-342
RHEL 8 (1 rule)
- V-244527 RHEL 8 must have the packages required to use the hardware random number generator entropy gatherer service. blocks CWE-342