Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).
Priority MEDIUM 45CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).
Why it matters now
EPSS 0.0159 75th percentileScored 2026-11-07
Fix Fixed WebAccess/NMS: 3.0.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | WebAccess/NMS | before 3.0.2 | 3.0.2 | Patch available | CNA |
- WebAccess/NMS Vendor— Affected before 3.0.2 Fixed in 3.0.2 Patch available CNA
Remediation
- Fix · CNA WebAccess/NMS Fixed in 3.0.2
Timeline
- 2026-10-02 Threatist record created from CVE-2020-10621
- 2026-10-03 Alias added: GHSA-29v5-v73g-x3cp
References
More Advantech Webaccess/nms vulnerabilities
- TI-2020-08531 Path traversal in WebAccess/NMS CVSS 3.1CRITICAL 9.1
- TI-2018-06387 Heap-based buffer overflow in Advantech WebAccess CVSS 3.1CRITICAL 9.8
- TI-2018-07478 Path traversal in Advantech WebAccess CVSS 3.0CRITICAL 9.8
- TI-2018-05408 Stack-based buffer overflow in Advantech WebAccess CVSS 3.1CRITICAL 9.8
- TI-2018-05414 Access control flaw in Advantech WebAccess CVSS 3.0CRITICAL 9.8
- TI-2018-05406 NULL pointer dereference in Advantech WebAccess CVSS 3.0CRITICAL 9.8
Sources
- CVE-2020-10621 · CVE Program
- CVE-2020-10621 · NVD
- FIRST EPSS
- GHSA-29v5-v73g-x3cp · GitHub Advisory Database · CC BY 4.0
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