What is CVE-2026-69414?
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".
The record classifies CVE-2026-69414 under weakness classes CWE-284, CWE-269. Its CVSS v3 base vector states that the flaw requires local access to the host, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 72 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 7.8 — HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C - EPSS (FIRST)
- 0.3% probability of exploitation in the next 30 days, higher than 23.7% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 6.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-08-14, last modified 2026-10-08
Is CVE-2026-69414 being exploited?
Weaponised exploit code for CVE-2026-69414 is publicly available. 2 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.
- 1neptune/ShieldBreak (github)
- trickest/cve (trickest)
Affected products and versions
- Microsoft: Malware Protection Engine
How to fix CVE-2026-69414
No vendor patch reference has been recorded for CVE-2026-69414 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-69414
2 tracked threats in the Threadlinqs corpus reference CVE-2026-69414, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on .