CVE-2021-22887

Name: CVE-2021-22887
Creator: NVD / NIST
Published: 2021-03-16T16:15:14.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.3/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2021-22887 is a low-severity vulnerability rated 2.3/10 on the CVSS scale. A vulnerability in the BIOS of Pulse Secure (PSA-Series Hardware) models PSA5000 and PSA7000 could allow an attacker to compromise BIOS firmware. This vulnerability can be exploited only as part of an attack chain. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

A vulnerability in the BIOS of Pulse Secure (PSA-Series Hardware) models PSA5000 and PSA7000 could allow an attacker to compromise BIOS firmware. This vulnerability can be exploited only as part of an attack chain. Before an attacker can compromise the BIOS, they must exploit the device.

Metrics

CVSS 3.1

2.3/10

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

EPSS Probability

0.25%

16.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-506

Affected Software

Vendor	Product	Versions
Pulsesecure	Psa-5000 Firmware	All versions
Pulsesecure	Psa-7000 Firmware	All versions
Supermicro	X10slh-F Firmware	< 3.4
Supermicro	X10sll-F Firmware	< 3.4
Supermicro	X10slm-F Firmware	< 3.4
Supermicro	X10sll\+F Firmware	< 3.4
Supermicro	X10slm\+-F Firmware	< 3.4
Supermicro	X10slm\+Ln4f Firmware	< 3.4
Supermicro	X10sla-F Firmware	< 3.4
Supermicro	X10sl7-F Firmware	< 3.4
Supermicro	X10sll-S Firmware	< 3.4
Supermicro	X10sll-Sf Firmware	< 3.4

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44712Patch, Vendor Advisory
https://www.supermicro.com/en/support/security/TrickbotThird Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44712Patch, Vendor Advisory
https://www.supermicro.com/en/support/security/TrickbotThird Party Advisory

Timeline

Published: Mar 16, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22887?

How severe is CVE-2021-22887?

CVE-2021-22887 has a CVSS score of 2.3/10 (LOW severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22887?

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-2021-22887?

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

Scan your code now

Source: NVD / NIST