PT-2026-2709 · Microsoft · Connected Devices Platform Service+1

He Yi + 3 · Published 2026-01-13 · Updated 2026-05-26 · CVE-2026-20864

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Connected Devices Platform Service (Cdpsvc) (affected versions not specified)

Description A heap-based buffer overflow exists in the Connected Devices Platform Service (Cdpsvc). This condition allows a locally authenticated attacker to gain elevated privileges on the system. The issue allows attackers to affect the system, potentially leading to privilege escalation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

BDU:2026-00440

CVE-2026-20864

Affected Products

Connected Devices Platform Service

Windows

References · 10

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20864 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00440 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20864 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20864 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20864 · Security Note
• https://osv.dev/vulnerability/CVE-2026-20864 · Vendor Advisory
• https://vicarius.io/vsociety/posts/cve-2026-20864-mitigation-script-heap-based-buffer-overflow-in-windows-connected-devices-platform-service · Note
• https://vicarius.io/vsociety/posts/cve-2026-20864-detection-script-heap-based-buffer-overflow-in-windows-connected-devices-platform-service · Note
• https://t.me/cveNotify/164728 · Telegram Post
• https://twitter.com/CVEnew/status/2011759665311264808 · Twitter Post