PT-2026-58518 · Microsoft · Windows Dhcp Client+1

CVE-2026-54128 · Published 2026-07-14 · Updated 2026-07-21

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows DHCP Client (affected versions not specified)

Description A use after free condition in the Windows DHCP Client allows an unauthorized attacker to execute arbitrary code locally and remotely, potentially compromising the system. Use after free is a memory corruption issue that occurs when an application continues to use a pointer after it has been freed.

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

RCE

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-10124

CVE-2026-54128

Affected Products

Windows

Windows Dhcp Client

References · 6

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-54128 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54128 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-10124 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-54128 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-54128 · Security Note
• https://t.me/cveNotify/209957 · Telegram Post