Microsoft Windows Universal Plug and Play (UPnP) Service Privilege Escalation Vulnerability

An elevation of privilege vulnerability exists when the Windows Universal Plug and Play (UPnP) service improperly allows COM object creation, aka 'Windows UPnP Service Elevation of Privilege Vulnerability'.

CheckOps priority index

6.4/10 Patch within 7 days

Severity7.8

Probability3.0

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 30.2% higher than 98.2% of CVEs

CVSS 3.1 7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:

Exploited for 1,694 days 15 Mar 2022

CISA due date 05 Apr 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)15 Mar 2022
Exploited in EUVD (ENISA)15 Mar 2022
Used by ransomwareyes
EPSS above 10 %30.2%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Affected products

Windows 10 Version 1903 for 32-bit SystemsWindowsWindows 10 Version 1903 for ARM64-based SystemsWindows ServerWindows 10 Version 1903 for x64-based SystemsWindows Server, version 1903 (Server Core installation)

Affected versions

unspecified
10 for 32-bit Systems
10 Version 1809 for 32-bit Systems
RT 8.1
2012 R2
7 for x64-based Systems Service Pack 1
8.1 for x64-based systems
2012 (Core installation)
10 Version 1809 for x64-based Systems
10 Version 1709 for x64-based Systems
2019
2012

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

12 Nov 2019
Published
15 Mar 2022
Exploitation reported (ENISA)
15 Mar 2022
Added to the KEV catalog
05 Apr 2022
CISA remediation due date
06 Oct 2026
EPSS peak: 30.2%

References

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