CVE-2021-20597
Last modified
CVE-2021-20597 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 2.22% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mitsubishielectric | R08sfcpu Firmware | All versions |
| Mitsubishielectric | R16sfcpu Firmware | All versions |
| Mitsubishielectric | R32sfcpu Firmware | All versions |
| Mitsubishielectric | R120sfcpu Firmware | All versions |
| Mitsubishielectric | R08psfcpu Firmware | All versions |
| Mitsubishielectric | R16psfcpu Firmware | All versions |
| Mitsubishielectric | R32psfcpu Firmware | All versions |
| Mitsubishielectric | R120psfcpu Firmware | All versions |
References
- https://jvn.jp/vu/JVNVU98578731/index.htmlThird Party Advisory
- https://jvn.jp/vu/JVNVU98578731/index.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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