Back to CVE-2026-21243
How to verify CVE-2026-21243
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 11 NVT checks for CVE-2026-21243. 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 (11)
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 2026-06-251.3.6.1.4.1.25623.1.3.0.12244.0.5075897.494846484650535157564650495257since 2026-06-251.3.6.1.4.1.25623.1.3.0.12436.0.5075899.49484648465054494848465150515548since 2026-06-251.3.6.1.4.1.25623.1.3.0.12436.0.5075942.49484648465054494848465150514951since 2026-06-251.3.6.1.4.1.25623.1.3.0.12437.0.5075899.49484648465054494848465150515548since 2026-06-25
+ 1 more NVT
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