Microsoft · Site Isolation Issue
Affects MicrosoftSource GCVE Database
Not known to be exploited · CVSS 8.1 High.
Data as of 14 Nov 2026, 09:02 UTC
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Security Response Center Microsoft | Affected
| Fixed in
|
Description
CVE-2026-74962 is a vulnerability related to a site isolation issue in the Networking: Cookies component of Microsoft software version 4.0. The vulnerability is identified as CWE-346, which typically involves issues with origin validation or similar security checks. No CVSS score or detailed impact information is provided, and no known exploits are reported in the wild. There is no information about available patches or fixes.