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Back to CVE-2021-21775

How to verify CVE-2021-21775

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 22 NVT checks for CVE-2021-21775. 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='1.3.6.1.4.1.25623.1.0.704945' details='1'/>"
NVT OIDs (22)
  • 1.3.6.1.4.1.25623.1.0.704945since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.845013since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.854031since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.854045since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.879881since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.879933since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.10.2021.0400since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.11.2021.4381since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.1.1.2021.4945since 2026-06-25
  • 1.3.6.1.4.1.25623.1.1.11.2025.10364since 2026-06-25

+ 12 more NVTs

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