CVE-2026-69979
Improper protection of alternate path in Windows AppX Deployment Service allows an authorized…
- Risk score
- 50/100
- CVSS
- 5.5 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Improper protection of alternate path in Windows AppX Deployment Service allows an authorized attacker to bypass a security feature locally.
- Affected
- Microsoft Windows 10 21h2
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Microsoft Windows 10 21h2: Amber, patch this week. Missing authorization in Windows AppX Deployment Extensions allows an authorized attacker to elevate privileges locally.
The flaws
- CVE-2026-69979: Improper protection of alternate path in Windows AppX Deployment Service allows an authorized… (CVSS 5.5 · EPSS 0%)
- CVE-2026-69945: Missing authorisation (CVSS 8.8 · EPSS 0%)
- CVE-2026-83927: Improper link resolution before file access ('link following') in Windows Registry allows an… (CVSS 7.8 · EPSS 0%)
- CVE-2026-70027: Heap buffer overflow (CVSS 7.8 · EPSS 0%)
The fix
Fix: Apply the vendor's security update; see the linked advisory.
Who is exposed: Microsoft Windows 10 21h2
Where it stands
- No known exploitation
Connects to
- Same weakness: CWE-424 (CWE-424). 4 other warnings in 30 days
- Same product: Earlier Microsoft Windows 10 21h2 warnings. 23 in the last 90 days
Why it is Yellow
- CVSS 5.5 medium
- On your watchlist: windows server
References
Original description
Improper protection of alternate path in Windows AppX Deployment Service allows an authorized attacker to bypass a security feature locally.
Last activity 13 Oct 2026. Patch Forecast updates every hour.