Recorded 15 Oct 2026 at 21:30 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.
Microsoft Identity Web Elevation of Privilege Vulnerability
Authentication bypass by assumed-immutable data in Microsoft Identity Web allows an authorized attacker to elevate privileges over a network.
What it said
- CVE
- CVE-2026-80092
- Severity
- Important
- CVSS base score
- 5.3
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
- Impact
- Elevation of Privilege
- Exploitation detected
- Not reported by MSRC
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
- Component
- Microsoft Identity Web
- Weakness
- CWE-302: Authentication Bypass by Assumed-Immutable Data
- Issued by
- Microsoft
- Customer action
- Required: apply the update
- Affected products
- MessagePack 2.5.303
- Updates that fix it
- No KB listed
- CISA KEV
- Not listed in the collected catalog
- EPSS
- Not scored
- Public exploit code
- No Nuclei template listed
- Published
- 15 Oct 2026 07:00 UTC
- Last revised
- 15 Oct 2026 07:00 UTC
- Revision note
- Information published.
Recorded links
Source evidence when recorded
- Microsoft security releases
- Complete at observationRead 15 Oct 2026 at 21:30 UTC
- CISA KEV
- Complete at observationRead 15 Oct 2026 at 21:30 UTC
- FIRST EPSS
- Complete at observationRead 15 Oct 2026 at 21:30 UTC
- Public exploit code
- Complete at observationRead 15 Oct 2026 at 21:30 UTC
Coverage describes the sources at this observation. A complete read then does not establish their current position.
What changed
First observed 15 Oct 2026No field changes in the recorded history.
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