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Back to CVE-2021-26411

How to verify CVE-2021-26411

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 10 NVT checks for CVE-2021-26411. 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='1.3.6.1.4.1.25623.1.0.818007' details='1'/>"
NVT OIDs (10)
  • 1.3.6.1.4.1.25623.1.0.818007since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818008since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818009since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818010since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818011since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818012since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818013since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818014since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818015since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.818016since 2026-06-25
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