Windows Print Spooler Components: Local information disclosure
Summary
A local information disclosure flaw in the Windows Print Spooler Components allows an attacker with low privileges to read information they should not see. Microsoft classifies it as CWE-73 (External Control of File Name or Path) and rates it CVSS 5.5 (Medium). Exploitation requires local access and a valid user account, with no user interaction, and the impact is limited to confidentiality.
Affected
- Windows 10 Version 1607 and Windows Server 2016 (including Server Core): builds before 10.0.14393.9688
- Windows 10 Version 1809 and Windows Server 2019 (including Server Core): builds before 10.0.17763.9487
- Windows 10 Version 21H2: builds before 10.0.19044.7846
- Windows 10 Version 22H2: builds before 10.0.19045.7846
- Windows 11 Version 23H2: builds before 10.0.22631.7711
- Windows 11 Version 24H2: builds before 10.0.26100.9974
- Windows 11 Version 25H2: builds before 10.0.26200.9974
- Windows 11 Version 26H1: builds before 10.0.28000.3501
- Windows 11 Version 26H2: builds before 10.0.26300.9974
- Windows Server 2022: builds before 10.0.20348.5870
- The list may be incomplete; verify on the MSRC update guide.
Fixed in
- Installing the November 2026 Windows security update, which contains the fixed builds listed above.
- Senserva lists this CVE in KB5131080 (Windows Server 2025) and KB5131090 (Windows Server 2022); confirm the KB numbers on MSRC.
Workaround
- No workaround is described in the sources; installing the update is the fix.
- Own hardening recommendation (not from a source): on servers and domain controllers that do not print, disable the Print Spooler service.
Exploitation
- Not exploited in the wild according to Senserva.
- No public proof of concept known (VulDB).
- CISA SSVC: exploitation none, not automatable, partial technical impact.
Our recommendation
- Install the November 2026 security update, starting with servers and domain controllers.
- On servers and domain controllers that do not print, disable the Print Spooler service.
- Check which systems have the Print Spooler running and monitor for unusual local activity on them.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – Windows Print Spooler Components
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131291, KB5131085, KB5131096, KB5131090, KB5131087, KB5132061
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide: CVE-2026-105531 msrc.microsoft.com
- CVE Record: CVE-2026-105531 www.cve.org
- VulDB: CVE-2026-105531 vuldb.com
- Senserva: KB5131080 (Windows Server 2025) senserva.com
- Senserva: KB5131090 (Windows Server 2022) senserva.com
- Strix: CVE-2026-105531 (third-party, unverified) www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 17:02.
Original description (NVD)
External control of file name or path in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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