CVE-2026-83947CWE-862broken-access-control

CVE-2026-83947

High · published October 9, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
28.8
In the wild
Unconfirmed
What it is

Missing authorization in Azure Event Grid allows an authorized attacker to perform spoofing over a network.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00362 · 28.8th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-10-09T03:17Z
Affected products (1)
ProductVersionsFixed in
microsoft/azure_event_gridall versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83947 · [email protected]
EPSS history
Timeline
  • 10 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 08 OCT 22:15Z
    Azure Event Grid Spoofing Vulnerability
    cvelistv5
  • 08 OCT 22:15Z
    Azure Event Grid Spoofing Vulnerability
    cvelistv5