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High 7.7Published Oct 8, 2026
CVE-2026-83947Azure Event Grid Spoofing Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft Azure Event Grid System and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.36%, higher than 28% of scored CVEs.
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Missing authorization in Azure Event Grid allows an authorized attacker to perform spoofing over a network.
- CVSS
- 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.36% (percentile 28)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Azure Event Grid System microsoft:azure_event_grid_system (from the name) | - | CNA record |
microsoft azure_event_grid microsoft:azure_event_grid | all versions | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83947vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.