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.
総合評価: CVE-2022-40267 は中リスク(44.9/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 1.18%、64 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 2.18% | 1.18% | -1.00% |
| 2 | 2026-02-22 | 2.26% | 2.18% | -0.08% |
| 3 | 2026-02-02 | — | 2.26% | — |
EPSS の全履歴 (全 25 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| mitsubishielectric | fx5u-80mt\/ess_firmware | — | cpe:2.3:o:mitsubishielectric:fx5u-80mt\/ess_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5u-32mt\/dss_firmware | — | cpe:2.3:o:mitsubishielectric:fx5u-32mt\/dss_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5u-64mt\/dss_firmware | — | cpe:2.3:o:mitsubishielectric:fx5u-64mt\/dss_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5u-80mt\/dss_firmware | — | cpe:2.3:o:mitsubishielectric:fx5u-80mt\/dss_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-32mt\/d_firmware | — | cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/d_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-64mt\/d_firmware | — | cpe:2.3:o:mitsubishielectric:fx5uc-64mt\/d_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-96mt\/d_firmware | — | cpe:2.3:o:mitsubishielectric:fx5uc-96mt\/d_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-32mt\/dss_firmware | — | cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/dss_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-64mt\/dss_firmware | — | cpe:2.3:o:mitsubishielectric:fx5uc-64mt\/dss_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-96mt\/dss_firmware | — | cpe:2.3:o:mitsubishielectric:fx5uc-96mt\/dss_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-32mt\/ds-ts_firmware | < 1.280 | cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/ds-ts_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-32mt\/dss-ts_firmware | < 1.280 | cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/dss-ts_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uc-32mr\/ds-ts_firmware | < 1.280 | cpe:2.3:o:mitsubishielectric:fx5uc-32mr\/ds-ts_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | r00cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r00cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r01cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r01cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r02cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r02cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r04cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r04cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r08cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r08cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r16cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r16cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r32cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r32cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r120cpu_firmware | — | cpe:2.3:o:mitsubishielectric:r120cpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r04encpu_firmware | — | cpe:2.3:o:mitsubishielectric:r04encpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r08encpu_firmware | — | cpe:2.3:o:mitsubishielectric:r08encpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r16encpu_firmware | — | cpe:2.3:o:mitsubishielectric:r16encpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r32encpu_firmware | — | cpe:2.3:o:mitsubishielectric:r32encpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | r120encpu_firmware | — | cpe:2.3:o:mitsubishielectric:r120encpu_firmware:-:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-24mt\/es_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-40mt\/es_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-60mt\/es_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-60mt\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-24mr\/es_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-24mr\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-40mr\/es_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-40mr\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-60mr\/es_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-60mr\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-24mt\/ess_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/ess_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-40mt\/ess_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/ess_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-60mt\/ess_firmware | < 1.042 | cpe:2.3:o:mitsubishielectric:fx5uj-60mt\/ess_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-24mt\/es-a_firmware | < 1.043 | cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/es-a_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-40mt\/es-a_firmware | < 1.043 | cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/es-a_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-60mt\/es-a_firmware | < 1.043 | cpe:2.3:o:mitsubishielectric:fx5uj-60mt\/es-a_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-24mr\/es-a_firmware | < 1.043 | cpe:2.3:o:mitsubishielectric:fx5uj-24mr\/es-a_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-40mr\/es-a_firmware | < 1.043 | cpe:2.3:o:mitsubishielectric:fx5uj-40mr\/es-a_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5uj-60mr\/es-a_firmware | < 1.043 | cpe:2.3:o:mitsubishielectric:fx5uj-60mr\/es-a_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-30mt\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-30mt\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-40mt\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-40mt\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-60mt\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-60mt\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-80mt\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-80mt\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-30mr\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-30mr\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-40mr\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-40mr\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-60mr\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-60mr\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-80mr\/es_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-80mr\/es_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-30mt\/ess_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-30mt\/ess_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-40mt\/ess_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-40mt\/ess_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-60mt\/ess_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-60mt\/ess_firmware:*:*:*:*:*:*:*:* |
| mitsubishielectric | fx5s-80mt\/ess_firmware | < 1.003 | cpe:2.3:o:mitsubishielectric:fx5s-80mt\/ess_firmware:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://jvn.jp/vu/JVNVU99673580/index.html | Mitigation Third Party Advisory |
| https://www.cisa.gov/uscert/ics/advisories/icsa-23-017-02 | Mitigation Third Party Advisory US Government Resource |
| https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-019_en.pdf | Mitigation Vendor Advisory |
| https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1646 |