Back to CVE-2026-21240
How to verify CVE-2026-21240
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 21 NVT checks for CVE-2026-21240. 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='1.3.6.1.4.1.25623.1.3.0.11571.0.5075904.494846484649555554514656515657' details='1'/>" NVT OIDs (21)
1.3.6.1.4.1.25623.1.3.0.11571.0.5075904.494846484649555554514656515657since 2026-06-251.3.6.1.4.1.25623.1.3.0.11572.0.5075904.494846484649555554514656515657since 2026-06-251.3.6.1.4.1.25623.1.3.0.11923.0.5075906.494846484650485152564652555551since 2026-06-251.3.6.1.4.1.25623.1.3.0.11923.0.5075943.494846484650485152564652554949since 2026-06-251.3.6.1.4.1.25623.1.3.0.11924.0.5075906.494846484650485152564652555551since 2026-06-251.3.6.1.4.1.25623.1.3.0.11924.0.5075943.494846484650485152564652554949since 2026-06-251.3.6.1.4.1.25623.1.3.0.11929.0.5075912.494846484649574852524654575155since 2026-06-251.3.6.1.4.1.25623.1.3.0.11931.0.5075912.494846484649574852524654575155since 2026-06-251.3.6.1.4.1.25623.1.3.0.12097.0.5075912.494846484649574852534654575155since 2026-06-251.3.6.1.4.1.25623.1.3.0.12099.0.5075912.494846484649574852534654575155since 2026-06-25
+ 11 more NVTs
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