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PatchSiren cyber security CVE debrief

CVE-2026-61361 Microsoft CVE debrief

The Windows DHCP Client Remote Code Execution Vulnerability, tracked as CVE-2026-61361, is a use-after-free vulnerability that allows an authorized attacker to execute code locally. This vulnerability affects Windows systems utilizing the DHCP Client. Defenders should assess exposure and apply patches from Microsoft. The CVE record was published on 2026-08-11T17:03:50.246Z and has not been modified since then. The vulnerability has a CVSS score of 7 and a severity rating of HIGH. AI-assisted PatchSiren debrief based on the supplied source corpus.

Vendor
Microsoft
Product
Windows 11 Version 24H2
CVSS
HIGH 7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-11
Original CVE updated
2026-10-08
Advisory published
2026-08-11
Advisory updated
2026-10-08

Who should care

Defenders responsible for Windows systems, particularly those using DHCP Client, should assess exposure and apply patches from Microsoft. This includes IT administrators, security teams, and operators managing Windows environments. The vulnerability has a CVSS score of 7 and a severity rating of HIGH, indicating a significant risk to affected systems.

Why it matters

Defenders should prioritize verifying exposure of Windows DHCP Client in their environment and applying patches from Microsoft due to the potential for local code execution.

  • Verify exposure of Windows DHCP Client in the environment
  • Apply patches from Microsoft for affected versions
  • Monitor for unauthorized changes to DHCP client configurations
  • Assess potential for local code execution

Technical summary

A use after free vulnerability in Windows DHCP Client allows an authorized attacker to execute code locally. The vulnerability is tracked as CVE-2026-61361 and has a CVSS score of 7. The vulnerability affects Windows systems utilizing the DHCP Client. Defenders should assess exposure and apply patches from Microsoft. The vulnerability has a severity rating of HIGH and was published on 2026-08-11T17:03:50.246Z.

Defensive priority

Defenders should prioritize verifying exposure of Windows DHCP Client in their environment and applying patches from Microsoft.

Recommended defensive actions

  • Verify exposure of Windows DHCP Client in the environment
  • Apply patches from Microsoft for affected versions
  • Monitor for unauthorized changes to DHCP client configurations

Evidence notes

The CVE record and source item provide details on the vulnerability in Windows DHCP Client, but specific details on exploitation are not provided. There is no evidence of public exploitation or specific attacks. The source item and CVE record provide limited details on the vulnerability, and defenders should verify exposure and apply patches from Microsoft.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-61361 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-61361

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-61361 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-61361

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Windows DHCP Client Remote Code Execution Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/61xxx/CVE-2026-61361.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61361

    Supplemental source - vendor-advisory, patch

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.