What is CVE-2021-22962?

CVE-2021-22962 is a critical-severity vulnerability in Ivanti Avalanche. CVSS score: 9.1/10. Published 2023-12-19.

How severe is CVE-2021-22962?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Ivanti Avalanche

CVE-2021-22962

An attacker can send a specially crafted request which could lead to leakage of sensitive data or potentially a resource-based DoS attack.

Published 2023-12-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.910 (99.8th percentile), scored 2026-10-26.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.910 · newest: 0.910 · change: 0.000

Affected products

Ivanti Avalanche — versions 6.4.1

References

download.wavelink.com/Files/avalanche_v6.4.2_release_notes.txt (Release Notes)

Frequently asked questions

What is CVE-2021-22962?: CVE-2021-22962 is a critical-severity vulnerability in Ivanti Avalanche. CVSS score: 9.1/10. Published 2023-12-19.
How severe is CVE-2021-22962?: Critical severity. CVSS v3 base score is 9.1 out of 10.