Auth bypass in Ivanti Avalanche

CVE-2021-42126

An improper authorization control vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform privilege escalation.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.040 (90.2th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-42126: held from 0.039 to 0.040.

EPSS over last 30 days · oldest: 0.039 · newest: 0.040 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-42126?
CVE-2021-42126 is a high-severity vulnerability in Ivanti Avalanche, classified under Improper Authorization. CVSS score: 8.8/10. Published 2021-12-07.
How severe is CVE-2021-42126?
High severity. CVSS v3 base score is 8.8 out of 10.