CVE detail
CVE-2026-20816
Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 6.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
1 source links · newest first
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20816msrc.microsoft.com
No excerpt available.
Vendor Advisorymsrc.microsoft.comJan 13, 2026, 6:16 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-20831CVSS 7.8 · High
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Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate priv…
- CVE-2026-27929CVSS 7.0 · High
Time-of-check time-of-use (toctou) race condition in Windows LUAFV allows an authorized attacker to elevate privileges locally.
- CVE-2026-20809CVSS 7.8 · High
Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized attacker to elevate privileges locally.
- CVE-2025-54895CVSS 7.8 · High
Integer overflow or wraparound in Windows SPNEGO Extended Negotiation allows an authorized attacker to elevate privileges locally.
- CVE-2025-54093CVSS 7.0 · High
Time-of-check time-of-use (toctou) race condition in Windows TCP/IP allows an authorized attacker to elevate privileges locally.