CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NCVE-2021-20597
Critical (9.1) in mitsubishielectric. EPSS 2.2% chance of exploitation in the next 30 days.
Insufficiently Protected Credentials vulnerability in Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU firmware versions "26" and prior and Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to the target unauthorizedly by sniffing network traffic and obtaining credentials when registering user information in the target or changing a password.
Severity
- EPSS
- 2.2% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-10-31)
- CWE
- CWE-522
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mitsubishielectric:r08psfcpu_firmware
- mitsubishielectric:r08sfcpu_firmware
- mitsubishielectric:r120psfcpu_firmware
- mitsubishielectric:r120sfcpu_firmware
- mitsubishielectric:r16psfcpu_firmware
- mitsubishielectric:r16sfcpu_firmware
- mitsubishielectric:r32psfcpu_firmware
- mitsubishielectric:r32sfcpu_firmware