What is CVE-2024-22053?

CVE-2024-22053 is a high-severity vulnerability in Ivanti Connect Secure, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2024-04-04.

How severe is CVE-2024-22053?

High severity. CVSS v3 base score is 8.2 out of 10.

Buffer overflow in Ivanti Connect Secure

CVE-2024-22053

A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x 22.x) and Ivanti Policy Secure allows an unauthenticated malicious user to send specially crafted requests in-order-to crash the service thereby causing a DoS attack or in certain conditions read contents from memory.

Vulnerability class: Buffer Overflow

Published 2024-04-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.035 (88.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000

Affected products

Ivanti Connect Secure — versions 22.1R6.2, 22.2R4.2, 22.3R1.2
Ivanti Connect Secure — versions 9.1, 22.1, 22.2
Ivanti Policy Secure — versions 22.4R1.2, 22.5R1.3, 22.6R1.2
Ivanti Policy Secure — versions 9.0, 9.1, 22.1

Weakness classification (CWE)

References

forums.ivanti.com/s/article/New-CVE-2024-21894-Heap-Overflow-CVE-2024-22052-Nul… (Vendor Advisory)

Frequently asked questions

What is CVE-2024-22053?: CVE-2024-22053 is a high-severity vulnerability in Ivanti Connect Secure, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2024-04-04.
How severe is CVE-2024-22053?: High severity. CVSS v3 base score is 8.2 out of 10.