Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-22893

Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 10.0, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from ivanti organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-04-23T17:15:08.127

Last Modified

2025-12-18T02:00:02.347

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 10.0 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-287
Type: Primary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.0	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes
Application	ivanti	connect_secure	9.1	Yes

References

https://blog.pulsesecure.net/pulse-connect-secure-security-update/ Vendor Advisory ([email protected])
https://kb.cert.org/vuls/id/213092 Third Party Advisory, US Government Resource ([email protected])
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Broken Link, Vendor Advisory ([email protected])
https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html Third Party Advisory ([email protected])
https://blog.pulsesecure.net/pulse-connect-secure-security-update/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://kb.cert.org/vuls/id/213092 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Broken Link, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.kb.cert.org/vuls/id/213092 US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893 US Government Resource (134c704f-9b21-4f2e-91b3-4a467353bcc0)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For ivanti's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.