VYPR
Medium severity5.9NVD Advisory· Published Jan 20, 2023· Updated Jun 17, 2026

CVE-2022-40267

CVE-2022-40267

Description

Predictable Seed in Pseudo-Random Number Generator (PRNG) vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-xMy/z (x=32,64,80, y=T,R, z=ES,DS,ESS,DSS) with serial number 17X** or later, and versions 1.280 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-xMy/z (x=32,64,80, y=T,R, z=ES,DS,ESS,DSS) with serial number 179 and prior, and versions 1.074 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-xMy/z (x=32,64,96, y=T, z=D,DSS)) with serial number 17X or later, and versions 1.280 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-xMy/z (x=32,64,96, y=T, z=D,DSS)) with serial number 179** and prior, and versions 1.074 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MT/DS-TS versions 1.280 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MT/DSS-TS versions 1.280 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UJ-xMy/z (x=24,40,60, y=T,R, z=ES,ESS) versions 1.042 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UJ-xMy/ES-A (x=24,40,60, y=T,R) versions 1.043 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5S-xMy/z (x=30,40,60,80, y=T,R, z=ES,ESS) versions 1.003 and prior, Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MR/DS-TS versions 1.280 and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R00/01/02CPU versions 33 and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120(EN)CPU versions 66 and prior allows a remote unauthenticated attacker to access the Web server function by guessing the random numbers used for authentication from several used random numbers.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

69
  • (expand)+ 13 more
    • (no CPE)
    • (no CPE)range: versions 33 and prior
    • (no CPE)range: versions 33 and prior
    • (no CPE)range: versions 33 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
    • (no CPE)range: versions 66 and prior
  • Mitsubishi Electric Corporation/MELSEC iQ-F Seres FX5U-80MT/ESv5
    Range: serial number 17X**** or later, and versions 1.280 and prior
  • 1.003 and prior+ 46 more
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: 1.003 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: serial number 17X**** or later, and versions 1.280 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.043 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.043 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.043 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.043 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.043 and prior
    • (no CPE)range: 1.042 and prior
    • (no CPE)range: 1.043 and prior
    • (no CPE)range: 1.042 and prior
  • Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5UC-32MR/DS-TSv5
    Range: versions 1.280 and prior
  • Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5UC-32MT/DSSv5
    Range: serial number 17X**** or later, and versions 1.280 and prior
  • Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5UC-32MT/DSS-TSv5
    Range: versions 1.280 and prior
  • Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5UC-32MT/DS-TSv5
    Range: versions 1.280 and prior
  • Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5UC-64MT/DSSv5
    Range: serial number 17X**** or later, and versions 1.280 and prior
  • Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5UC-96MT/DSSv5
    Range: serial number 17X**** or later, and versions 1.280 and prior

Patches

Vulnerability mechanics

References

4

News mentions

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