CVEvulnerability

CVE-2021-22894

8.8 HIGH Known exploited Published 2021-05-27 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Ivanti Pulse Connect Secure Collaboration Suite Buffer Overflow Vulnerability — Ivanti Pulse Connect Secure

Ivanti Pulse Connect Secure Collaboration Suite contains a buffer overflow vulnerabilities that allows a remote authenticated users to execute code as the root user via maliciously crafted meeting room.

Added to KEV: 2021-11-03
Remediation due: 2022-05-03
Ransomware use: Unknown
Required action: Apply updates per vendor instructions.
Notes: Reference CISA's ED 21-03 (https://www.cisa.gov/news-events/directives/ed-21-03-mitigate-pulse-connect-secure-product-vulnerabilities) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-03. https://nvd.nist.gov/vuln/detail/CVE-2021-22894

Status: Analyzed
Published: 2021-05-27
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected]): 9.0 HIGH — AV:N/AC:L/Au:S/C:C/I:C/A:C
Weaknesses: CWE-119, 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 configurations

• ivanti connect secure 9.0 • ivanti connect secure 9.1

Weakness · CWE (2)

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness
CWE-94 Improper Control of Generation of Code weakness

References