CVE-2021-22894

HIGH8.8

CISA KEV

Published 2021-05-27 · Updated 2026-06-17 · Source support@hackerone.com

Summary

CVE-2021-22894 is a high-severity (CVSS 8.8) vulnerability in Ivanti Pulse Connect Secure. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2022. CISA does not currently list it as used in ransomware campaigns. Ivanti has 38 vulnerabilities in the KEV catalog, 12 of them linked to ransomware.

All 38 known-exploited Ivanti vulnerabilities →

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.

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

CWE-94CWE-119

CISA Known-Exploited Vulnerability

Product: Ivanti — Pulse Connect Secure

Name: Ivanti Pulse Connect Secure Collaboration Suite Buffer Overflow Vulnerability

Date added: 2021-11-03 · Due: 2022-05-03

Required action: Apply updates per vendor instructions.

References

View on NVD

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added 2026-05-07
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Endpoint Manager Mobile (EPMM) — Ivanti Endpoint Manager Mobile (EPMM) Code Injection Vulnerability
added 2026-04-08

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