What is CVE-2021-22900?

CVE-2021-22900 is a vulnerability in Pulse Secure, classified under Code Injection. Published 2021-05-27.

Is CVE-2021-22900 known to be exploited?

Yes. CVE-2021-22900 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

RCE in Pulse Secure

CVE-2021-22900

A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web inter…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.010 (77.1th percentile) — read the EPSS interpretation.

Affected products

N/a Pulse Secure — versions Fixed in 9.1R11.4

Weakness classification (CWE)

CWE-94 — Code Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-22900?: CVE-2021-22900 is a vulnerability in Pulse Secure, classified under Code Injection. Published 2021-05-27.
Is CVE-2021-22900 known to be exploited?: Yes. CVE-2021-22900 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.