CVE-2026-20864CWE-122

CVE-2026-20864

High · published January 13, 2026

CVSS v3.1
7.8
EPSS
1%
Percentile
45.4
In the wild
Unconfirmed
What it is

⚡ A heap-based buffer overflow in the Connected Devices Platform Service (Cdpsvc) puts your local system at risk — an authorized attacker can elevate their privileges with surprisingly sneaky simplicity! 🔥 Think of it like a sneaky employee who finds a way to slip into the executive lounge despite only having a regular office pass; once they're in, they can access sensitive information and potentially wreak havoc on the company's operations. If exploited, an attacker could gain elevated privileges on the system, allowing them to execute arbitrary code and have full control over user data and system functions. This could lead to absolutely devastating consequences, including unauthorized data access or even complete system compromise!

Put simply

Think of it like a sneaky employee who finds a way to slip into the executive lounge despite only having a regular office pass; once they're in, they can access sensitive information and potentially wreak havoc on the company's operations. This vulnerability allows authorized users to exploit a heap-based buffer overflow in Cdpsvc, granting them the ability to execute code with higher privileges than intended, potentially compromising the entire system.

What to do

If exploited, an attacker could gain elevated privileges on the system, allowing them to execute arbitrary code and have full control over user data and system functions. This could lead to absolutely devastating consequences, including unauthorized data access or even complete system compromise! To protect against this vulnerability, make sure to update to the latest version of the Connected Devices Platform Service as soon as a patch is released. Additionally, review user access privileges and limit access wherever possible to minimize risk. You've got this! Keep your systems secure and stay ahead of the game! 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00553 · 45.4th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-01-13T23:16Z
Affected products (11)
ProductVersionsFixed in
microsoft/windows_10_1809< 10.0.17763.827610.0.17763.8276
microsoft/windows_10_1809< 10.0.17763.827610.0.17763.8276
microsoft/windows_10_21h2< 10.0.19044.680910.0.19044.6809
microsoft/windows_10_22h2< 10.0.19045.680910.0.19045.6809
microsoft/windows_11_23h2< 10.0.22631.649110.0.22631.6491
microsoft/windows_11_24h2< 10.0.26100.762310.0.26100.7623
microsoft/windows_11_25h2< 10.0.26200.762310.0.26200.7623
microsoft/windows_server_2019< 10.0.17763.827610.0.17763.8276
microsoft/windows_server_2022< 10.0.20348.464810.0.20348.4648
microsoft/windows_server_2022_23h2< 10.0.25398.209210.0.25398.2092
microsoft/windows_server_2025< 10.0.26100.3223010.0.26100.32230
References (3)
EPSS history
Timeline
  • 13 JAN 17:56Z
    Windows Connected Devices Platform Service Elevation of Privilege Vulnerability
    cvelistv5