CVE-2025-59273
published 2025-10-23CVE-2025-59273: Improper access control in Azure Event Grid allows an unauthorized attacker to elevate privileges over a network.
PriorityP260critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.35%
26.5th percentile
Improper access control in Azure Event Grid allows an unauthorized attacker to elevate privileges over a network.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | azure_event_grid_system | — | — |
| msrc | azure_event_grid_system | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- ·This vulnerability has been fully mitigated server-side by Microsoft. No customer action, patching, or configuration change is required. There are no published technical details, PoC, or exploitation indicators available for detection engineering. ↗
- ·The vulnerability has NOT been publicly disclosed or exploited in the wild, meaning no IOCs or attack telemetry are available. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.3HIGH
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Microsoft
Azure Event Grid System Elevation of Privilege Vulnerability
vendor_msrc·2025-10-14·CVSS 7.3
CVE-2025-59273 [HIGH] CWE-284 Azure Event Grid System Elevation of Privilege Vulnerability
Azure Event Grid System Elevation of Privilege Vulnerability
Description: Improper access control in Azure Event Grid allows an unauthorized attacker to elevate privileges over a network.
FAQ: Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.
Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.
Azure Event Grid: Azure Event Grid
Microsoft: Microsoft
Customer Action Required: No
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:N/A
GHSA
GHSA-5wpc-p9f6-h8mw: Improper access control in Azure Event Grid allows an unauthorized attacker to elevate privileges over a network
ghsa_unreviewed·2025-10-24
CVE-2025-59273 [HIGH] CWE-284 GHSA-5wpc-p9f6-h8mw: Improper access control in Azure Event Grid allows an unauthorized attacker to elevate privileges over a network
Improper access control in Azure Event Grid allows an unauthorized attacker to elevate privileges over a network.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-10-23
Published