LOW
CVE-2021-22887
CWE-506Published: March 16, 2021· Updated: Jun 17, 2026
2.3
CVSS v3.1
Official 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.
Technical Analysis
CVE-2021-22887 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Affected Vendors & Products
pulsesecure4 product(s)
psa-5000 firmwarepsa-5000psa-7000 firmwarepsa-7000
supermicro20 product(s)
x10slh-f firmwarex10slh-fx10sll-f firmwarex10sll-fx10slm-f firmwarex10slm-fx10sll\+f firmwarex10sll\+fx10slm\+-f firmwarex10slm\+-fx10slm\+ln4f firmwarex10slm\+ln4f+8
Source: NVD CPE · 24 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
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
Quick Facts
CVE IDCVE-2021-22887
CVSS Score2.3 / 10
SeverityLOW
WeaknessCWE-506
CISA KEVNo
Affected2 vendor(s)
PublishedMar 16, 2021
Related CVEs (CWE-506)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-22887 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.