CVE-2020-5633

Name: CVE-2020-5633
Creator: NVD / NIST
Published: 2021-01-13T10:15:14.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.18%

Last modified Jun 17, 2026

CVE-2020-5633 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Multiple NEC products (Express5800/T110j, Express5800/T110j-S, Express5800/T110j (2nd-Gen), Express5800/T110j-S (2nd-Gen), iStorage NS100Ti, and Express5800/GT110j) where Baseboard Management Controller (BMC) firmware Rev1.09 and earlier is applied allows remote attackers to bypass authentication and then obtain/modify BMC setting information, obtain monitoring information, or reboot/shut down the vulnerable product via unspecified vectors.. EPSS estimates a 3.18% chance of exploitation in the next 30 days.

Description

Multiple NEC products (Express5800/T110j, Express5800/T110j-S, Express5800/T110j (2nd-Gen), Express5800/T110j-S (2nd-Gen), iStorage NS100Ti, and Express5800/GT110j) where Baseboard Management Controller (BMC) firmware Rev1.09 and earlier is applied allows remote attackers to bypass authentication and then obtain/modify BMC setting information, obtain monitoring information, or reboot/shut down the vulnerable product via unspecified vectors.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.18%

86.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Nec	Baseboard Management Controller	<= 1.09

References

https://jpn.nec.com/security-info/secinfo/nv21-002.htmlVendor Advisory
https://jvn.jp/en/jp/JVN38752718/index.htmlThird Party Advisory
https://www.support.nec.co.jp/View.aspx?id=9010108754Vendor Advisory
https://jpn.nec.com/security-info/secinfo/nv21-002.htmlVendor Advisory
https://jvn.jp/en/jp/JVN38752718/index.htmlThird Party Advisory
https://www.support.nec.co.jp/View.aspx?id=9010108754Vendor Advisory

Timeline

Published: Jan 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5633?

How severe is CVE-2020-5633?

CVE-2020-5633 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.18% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5633?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5633?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST