How severe is CVE-2021-22887?

CVE-2021-22887 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-22887 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22887?

CVE-2021-22887 primarily affects Pulsesecure Psa-5000 Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22887?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-22887 published?

CVE-2021-22887 was published on 2021-03-16 and last updated on 2026-06-17.

CVE-2021-22887

CVE-2021-22887 is a low-severity vulnerability in Pulsesecure Psa-5000 Firmware with a CVSS 3.x base score of 2.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-506.

Key facts

Severity: Low (CVSS 3.x base score 2.3)
CVSS v2: 2.1
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-506
Affected product: Pulsesecure Psa-5000 Firmware
Published: 2021-03-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-22887?: CVE-2021-22887 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-22887 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22887?: CVE-2021-22887 primarily affects Pulsesecure Psa-5000 Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22887?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22887 published?: CVE-2021-22887 was published on 2021-03-16 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:o:pulsesecure:psa-5000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:pulsesecure:psa-7000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10slh-f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10sll-f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10slm-f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10sll\+f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10slm\+-f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10slm\+ln4f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10sla-f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10sl7-f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10sll-s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:supermicro:x10sll-sf_firmware:*:*:*:*:*:*:*:*

Other CWE-506 vulnerabilities

CVE-2026-28353 — Critical (CVSS 10.0): Trivy Vulnerability Scanner is a VS Code extension that helps find vulnerabilities. In Trivy VSCode Extension version…
CVE-2024-3094 — Critical (CVSS 10.0): Malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0. Through a series of…
CVE-2026-48027 — Critical (CVSS 9.8): Nx Console is the user interface for Nx & Lerna. On 19 May 2026, a malicious version of Nx Console, 18.95.0, was…
CVE-2026-8398 — Critical (CVSS 9.8): A supply chain attack compromised the official installation packages of DAEMON Tools Lite (Windows versions 12.5.0.2421…
CVE-2026-44484 — Critical (CVSS 9.8): PyTorch Lightning is a deep learning framework to pretrain and finetune AI models. Versions 2.6.2 and 2.6.2 have…
CVE-2026-6443 — Critical (CVSS 9.8): All plugins by Essentialplugin for WordPress are vulnerable to an injected backdoor in various versions. This is due to…

Browse all CWE-506 vulnerabilities →