CVE-2020-10621
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions...
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).
- Record
CVE-2020-10621- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-434
- Updated
- 2026-11-02
CVE List No score
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).
- Record
CVE-2020-10621- Weakness
- CWE-434
- Updated
- 2026-11-02
EUVDEUVD-2020-3069 No score
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).
- Record
EUVD-2020-3069- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-29v5-v73g-x3cp No score
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions...
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).
- Record
GHSA-29v5-v73g-x3cp- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-10621 is a critical vulnerability (CVSS 9.8) in Advantech Webaccess/nms, published April 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.59%, the 75th percentile. No source names a fixed version.