CVE-2021-3849
Last modified
CVE-2021-3849 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An authentication bypass vulnerability was discovered in the web interface of the Lenovo Fan Power Controller2 (FPC2) and Lenovo System Management Module (SMM) firmware that could allow an unauthenticated attacker to execute commands on the SMM and FPC2. SMM2 is not affected.. EPSS estimates a 1.22% chance of exploitation in the next 30 days.
Description
An authentication bypass vulnerability was discovered in the web interface of the Lenovo Fan Power Controller2 (FPC2) and Lenovo System Management Module (SMM) firmware that could allow an unauthenticated attacker to execute commands on the SMM and FPC2. SMM2 is not affected.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Lenovo | Nextscale N1200 Enclosure Firmware | < fhet50b-2.90 |
| Lenovo | Thinkagile Hx Enclosure Certified Node Firmware | < tesm28b-1.21 |
| Lenovo | Thinkagile Vx Enclosure Firmware | < tesm28b-1.21 |
| Lenovo | Thinksystem D2 Enclosure Firmware | < tesm28b-1.21 |
| Ibm | Nextscale Fan Power Controller Firmware | < 44a-3.70 |
References
- https://support.lenovo.com/us/en/product_security/LEN-72615Vendor Advisory
- https://support.lenovo.com/us/en/product_security/LEN-72615Vendor 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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