What is CVE-2021-22887?

CVE-2021-22887 is a low-severity vulnerability in Pulsesecure Psa-5000, classified under CWE-506. CVSS score: 2.3/10. Published 2021-03-16.

How severe is CVE-2021-22887?

Low severity. CVSS v3 base score is 2.3 out of 10.

Vulnerability in Pulsesecure Psa-5000

CVE-2021-22887

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.

Published 2021-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (14.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-506

References

kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44712 (Patch, Vendor Advisory)
www.supermicro.com/en/support/security/Trickbot (Third Party Advisory)

Frequently asked questions

What is CVE-2021-22887?: CVE-2021-22887 is a low-severity vulnerability in Pulsesecure Psa-5000, classified under CWE-506. CVSS score: 2.3/10. Published 2021-03-16.
How severe is CVE-2021-22887?: Low severity. CVSS v3 base score is 2.3 out of 10.