CVE-2019-0841

critical-risk
Published 2019-04-09

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836.

Do I need to act?

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82.7% chance of exploitation in next 30 days
EPSS score — higher than 17% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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4 public exploits available
46938, 46976, 46683 and 1 more
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (6)

Affected Vendors

Microsoft

References (17)

Third Party Advisory http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Se...
Third Party Advisory http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privile...
Third Party Advisory http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Se...
Third Party Advisory http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Se...
Exploit http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalati...
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841
Exploit https://www.exploit-db.com/exploits/46683/
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-19-360/
Third Party Advisory http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Se...
Third Party Advisory http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privile...
Third Party Advisory http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Se...
Third Party Advisory http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Se...
Exploit http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalati...
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841
Exploit https://www.exploit-db.com/exploits/46683/
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-19-360/
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-...
71
/ 100
critical-risk
Severity 24/34 · High
Exploitability 34/34 · Critical
Exposure 13/34 · Low