8.8

CVE-2021-42124: ivanti avalanche Improper Access Control

CVSS: 8.8v3.1HighModified
Published 07-12-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-42124 is a high (CVSS 8.8) Improper Access Control vulnerability in ivanti avalanche. EPSS estimates a 2.69% chance of exploitation in the next 30 days, higher than 85.6% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
2.69%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-12-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An improper access control vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform a session takeover.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.69%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

+0.09 pp

From 2.60% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.69%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ivanti1 product

1 vendor · 1 product

References

1 links