What’s Vulnerable › Vulnerabilities

CVE-2021-22894: Ivanti Pulse Connect Secure Collaboration Suite Buffer Overflow Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 41.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-27 · updated 2026-06-17
• Weakness: CWE-94

Description

A buffer overflow vulnerability exists in Pulse Connect Secure before 9.1R11.4 allows a remote authenticated attacker to execute arbitrary code as the root user via maliciously crafted meeting room.

Affected products

• Ivanti Connect Secure (Pulse Secure): 9.0, 9.0-r1, 9.0-r1.0, 9.0-r2, 9.0-r2.0, 9.0-r2.1 (+34)

References

• https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/?kA23Z000000boUWSAY
• https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/?kA23Z000000boUWSAY
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22894

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