CVE-2021-42133: ivanti avalanche
CVSS: 8.1v3.1HighModified
Published 07-12-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-42133 is a high (CVSS 8.1) vulnerability in ivanti avalanche. EPSS estimates a 2.90% chance of exploitation in the next 30 days, higher than 86.7% of scored vulnerabilities.
CVSS score
8.1/10
010
High · v3.1 (NVD)EPSS score
2.90%
0%100%
Low · +0.09 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 07-12-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform an arbitrary file write.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 8.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:HSourcesSingle source
Medium 5.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.90%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
+0.09 pp
From 2.80% on 20-09-2026
20-09-202620-10-2026
EPSS score2.90%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-434Unrestricted Upload of File with Dangerous TypeThe product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
- CWE-829Inclusion of Functionality from Untrusted Control SphereThe product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.
Affected systems
Ivanti1 product
- avalanche< 6.3.3
1 vendor · 1 product
References
1 links- forums.ivanti.com/s/article/Security-Alert-CVE-s-Addressed-in-Avalanche-6-3-3X Refsource MISCVendor Advisory