Is CVE-2021-22900 in the CISA KEV catalog?

Yes. CVE-2021-22900 is on the CISA Known Exploited Vulnerabilities list, added 2021-11-03.

What is the CVSS severity of CVE-2021-22900?

CVE-2021-22900 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2021-22900?

CVE-2021-22900 has an EPSS score of 14.15% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2021-22900

HIGHCISA KEVEPSS 96th pctl

7.2

CVSS v3

NVD

Description

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 interface.

CWE-94Code Injection CWE-669

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

14.15%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Ivanti Pulse Connect Secure Unrestricted File Upload Vulnerability

Ivanti Pulse Connect Secure contains an unrestricted file upload vulnerability that allows an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

Apply updates per vendor instructions.

Remediation due: 2022-05-03

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-18.