Vulnerability · Published Nov 20, 2025 · Assigned by microsoft
CVE-2025-62459Microsoft Defender Portal Spoofing Vulnerability
High 8.3
In plain English
A high-severity cross-site scripting in Microsoft 365 Defender Portal from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)0.3%top 73.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Microsoft Defender Portal Spoofing Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Defender Portal | - |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
References
- Microsoft Defender Portal Spoofing Vulnerability vendor-advisory, patch