CVE-2021-42125
HIGHCVSS 8.8/10EPSS 81.60%
Last modified
CVE-2021-42125 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An unrestricted file upload vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to write dangerous files.. EPSS estimates a 81.60% chance of exploitation in the next 30 days.
Description
An unrestricted file upload vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to write dangerous files.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ivanti | Avalanche | < 6.3.3 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42125?
An unrestricted file upload vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to write dangerous files.
How severe is CVE-2021-42125?
CVE-2021-42125 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 81.60% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42125?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2021-42125?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST