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CVE-2021-22900

70
FAUCET Score

CVE-2021-22900 is a critical vulnerability affecting Ivanti/Pulse Secure Connect Secure before 9.1R11.4, allowing an authenticated administrator to upload malicious archives via the web interface, leading to arbitrary file writes. This vulnerability carries a high CVSS score of 7.2, indicating a network-based attack with low complexity, requiring high privileges, and resulting in complete compromise of confidentiality, integrity, and availability. Notably, it is listed in CISA's KEV catalog, confirming active exploitation in the wild, despite a lack of public exploit code, and has garnered significant community discussion and media attention.

Impacted Technologies

VendorProductVersion(s)CPE
9.0CPE matchmatch criteria
cpe:2.3:a:ivanti:connect_secure:9.0:-:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:ivanti:connect_secure:9.0:r1:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:ivanti:connect_secure:9.0:r1.0:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:ivanti:connect_secure:9.0:r2:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:ivanti:connect_secure:9.0:r2.0:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
14.15%
Probability of exploitation in next 30 days
EPSS Percentile
96.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.1415 is in the 94th percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
kb.pulsesecure.net / articles/Pulse_Security_Advisories/SA44784
Broken LinkVendor Advisory