CVE-2021-42125
An unrestricted file upload vulnerability exists in Ivanti Avalanche before 6.3.3 allows an...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-42125- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-502, CWE-434
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-42125- Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2021-29110 No score
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.
- Record
EUVD-2021-29110- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pf9p-78xv-v5r8 No score
An unrestricted file upload vulnerability exists in Ivanti Avalanche before 6.3.3 allows an...
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.
- Record
GHSA-pf9p-78xv-v5r8- Weakness
- CWE-434
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42125 is a high vulnerability (CVSS 8.8) in Ivanti Avalanche, published December 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 81.6%, the 99th percentile. No source names a fixed version.