{"cve":"CVE-2021-22887","nvd":{"published":"2021-03-16T16:15:14.037","modified":"2026-06-17T03:37:57.187","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","score":2.3},"cwes":["CWE-506"],"references":["https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44712","https://www.supermicro.com/en/support/security/Trickbot","https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44712","https://www.supermicro.com/en/support/security/Trickbot"],"products":["pulsesecure:psa-5000_firmware","pulsesecure:psa-7000_firmware","supermicro:x10sl7-f_firmware","supermicro:x10sla-f_firmware","supermicro:x10slh-f_firmware","supermicro:x10sll-f_firmware","supermicro:x10sll-s_firmware","supermicro:x10sll-sf_firmware","supermicro:x10sll\\+f_firmware","supermicro:x10slm-f_firmware","supermicro:x10slm\\+-f_firmware","supermicro:x10slm\\+ln4f_firmware"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-22887","score":0.00276,"percentile":0.2007,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}