CVE-2021-22934

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-16 · updated 2026-06-17
Weakness: CWE-120

Description

A vulnerability in Pulse Connect Secure before 9.1R12 could allow an authenticated administrator or compromised Pulse Connect Secure device in a load-balanced configuration to perform a buffer overflow via a malicious crafted web request.

Affected products

Ivanti Connect Secure (Pulse Secure): 9.1, 9.1-r1.0, 9.1-r10.0, 9.1-r11.0, 9.1-r2.0, 9.1-r3.0 (+6)
Ivanti Connect Secure (Pulse Secure): before 9.1 — fixed in 9.1

How to fix

Upgrade to a fixed version: Ivanti Connect Secure (Pulse Secure) 9.1. Check the vendor advisory for mitigations.

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44858/?kA23Z000000L6oySAC
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44858/?kA23Z000000L6oySAC

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