Microsoft · HSTS response erases persisted entries
Affects MicrosoftSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 09:44 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 20 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| curlcurl | Affected
| Fixed in– |
Description
A vulnerability identified as CVE-2026-87863 affects Microsoft software version 3.0, where an HSTS response causes persisted entries to be erased. No detailed technical or impact information is provided beyond this behavior.