CVE-2021-22887

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine with an admin-level account. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-03-16 16:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:37 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.3% in the next 30 days (EPSS).
• Severity: 2.3 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-03-16 16:15 UTC

Last modified

2026-06-17 03:37 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-506

Record status

Modified

Affected

• Pulsesecure psa-5000 Firmware
• Pulsesecure psa-7000 Firmware
• 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

Attack profile CVSS 3.1 · 2.3

Attack vector

Local

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-22887.md and follow it. Check whether this project is affected by CVE-2021-22887. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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