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No exploitation reportedFix available

CVE-2020-10621

No exploitation reported by the sources we read.

  • Published2020-04-09
  • Fixed in3.0.2
  • WeaknessCWE-434

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).

Timeline

dates in UTC
  1. 2020-04-0913:15CVE publishedNVD

Versions per branch

NVD
Advantech webaccess\/nms
BranchAffectedFixed in
3.0< 3.0.23.0.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-20-098-01 CISA1 known affected

    Advantech WebAccess/NMS

    WebAccess/NMS: versions prior to 3.0.2

Full record on NVD

Fix

  1. Update Advantech webaccess\/nms to 3.0.2
  2. Mitigation from the vendor CISA ICSA-20-098-01 · 1 productAdvantech recommends updating to Version 3.0.2

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.010read 2026-10-23
  • CNAweakness (CWE)CWE-434known since 2026-10-23
  • NVDweakness (CWE)CWE-434read 2026-10-23
  • FIRST EPSSEPSS score1.6 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-04-09
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-29v5-v73g-x3cp

Frequently asked questions

What is CVE-2020-10621?

Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).

Is CVE-2020-10621 actively exploited?

Active exploitation of CVE-2020-10621 has not been confirmed. Its EPSS score was 1.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-10621?

CVE-2020-10621 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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