Reported by 2 outlets
ShieldCrash: Third Microsoft Defender Patch Bypass in Three Months
Why this score
- Breadth
- 1.00 / 2.0 · 2 sources
- Authority
- 1.20 / 2.0 · best outlet weight
- Severity
- 3.80 / 5.0 · CVSS + content signals
- Velocity
- 0.00 / 2.0 · updates in 48h
- Pickup speed
- 0.28 / 0.6 · time to second source
- Recency
- × 0.00 temporal multiplier
- Community
- + 0.00 / 1.5 · reddit signal
- Score
- 0.0 / 10 = base × recency + community
Timeline
-
original reporting
ShieldCrash: Testing the Claimed Microsoft Defender Zero-Day
malware.news · 34d ago · September 9th, 2026
Key Findings ShieldCrash is the third patch bypass in a row against the same Defender component. RoguePlanet (CVE-2026-50656) was patched in July 2026 through engine version 1.1.26060.3008. ShieldBreak (CVE-2026-69414) bypassed that patch in August and was itself patched in September 2026 through engine version 1.1.26080.3. ShieldCrash claims to bypass that fix and was published on September 8, 2026, the same day as September Patch Tuesday. All three target the Microsoft Malware Protection Engine, each through a different mechanism. The researcher claims an arbitrary file read as SYSTEM. The published README states the proof of concept demonstrates an arbitrary file read as SYSTEM on all supported Windows versions after the September 2026 updates, and describes the release as a skeleton. One day later, the researcher reclassified it as a full privilege escalation, claimed the SAM database can be obtained easily, and invited the community to complete the exploit while pointing at BlueHammer code as the hint. The proof of concept reaches Defender remediation and completes most of the chain. Defender processes the attacker-controlled scan object, Cloud Files callbacks execute, Object Manager directories a
-
update from malware.news
ShieldCrash PoC: Microsoft Defender Fix Bypass
malware.news · 33d ago · September 10th, 2026
ShieldCrash PoC: Microsoft Defender Fix Bypass Microsoft recently fixed CVE-2026-69414 (ShieldBreak) , a High-severity elevation-of-privilege vulnerability in the Microsoft Malware Protection Engine. Now, Nightmare Eclipse has released ShieldCrash , a Proof-of-Concept (PoC) that reportedly bypasses Microsoft’s remediation and enables arbitrary file reads with SYSTEM privileges on updated Windows systems. Microsoft has not publicly confirmed the reported bypass. What Is ShieldCrash? Nightmare Eclipse published the ShieldCrash PoC on GitHub , claiming Microsoft fixed several exploitation paths associated with CVE-2026-69414 but left another path available. ShieldCrash does not currently have a separate CVE.
-
mentioned by cyberworldops.eu
Researcher Nightmare-Eclipse has released ShieldCrash, a PoC claiming to bypass Microsoft's fix for CVE-2026-69414, a privilege escalation f
cyberworldops.eu · 33d ago · September 10th, 2026