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Back to CVE-2021-4209

How to verify CVE-2021-4209

Confirm whether your systems are actually affected — run the exact detection check below (Nuclei command or OpenVAS NVT). Detection only; it does not exploit.

Verify with OpenVAS

Greenbone/OpenVAS ships 26 NVT checks for CVE-2021-4209. OpenVAS detects this CVE by NVT OID — enable the NVT in your scan config, or confirm it is in your feed with the query below.

Confirm the NVT is in your feed (GMP)
gvm-cli socket --xml "<get_nvts nvt_oid='1.3.6.1.4.1.25623.1.0.845466' details='1'/>"
NVT OIDs (26)
  • 1.3.6.1.4.1.25623.1.0.845466since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.854542since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.893070since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.10.2022.0098since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.1.2.2022.3070since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.12.2022.5550.1since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.12.2022.5750.1since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.16.2022.1889since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.17.2022.0021since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.2.2022.2650since 2026-06-25

+ 16 more NVTs

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