CVE-2026-85877Important
Windows Print Spooler Remote Code Execution Vulnerability
Assessment
Heap-based buffer overflow in Windows Print Spooler Components allows an unauthorized attacker to execute code over a network.
- Severity
- Important
- CVSS base score
- 8.8CVSS:3.1/
AV:N/ AC:L/ PR:N/ UI:R/ S:U/ C:H/ I:H/ A:H/ E:U/ RL:O/ RC:C - Impact
- Remote Code Execution
- EPSS, next 30 days
- 0.8%Higher than 55.5% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
- Exploitability
- Exploitation Less Likely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Windows Print Spooler Components
- Weakness
- CWE-122: Heap-based Buffer Overflow
- Issued by
- Microsoft
- Published
- 8 Sep 2026 · September 2026
- Last revised
- 8 Sep 2026
Updates that fix it
1 KB| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5124008 | Security Update | Required | Windows 11 Version 24H2 for x64-based Systems | All CVEs in KB5124008 |
Affected products
Windows1 affected product
- Windows 11 Version 24H2 for x64-based Systems