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Post #32301 31
#ParsedReport #CompletenessLow
09-09-2026

ShieldCrash: Testing the Claimed Microsoft Defender Zero-Day

https://www.cyderes.com/howler-cell/shieldcrash-microsoft-zero-day

Report completeness: Low

Threats:
Shieldcrash_tool
Rogueplanet_tool
Shieldbreak_tool
Bluehammer_tool
Nightmare_eclipse_tool
Undefend_tool
Redsun_tool
Yellowkey_vuln
Greenplasma_vuln
Miniplasma_vuln
Greatxml_tool
Shadow_copies_delete_technique

Victims:
Microsoft defender, Microsoft malware protection engine, Windows

CVEs:
CVE-2026-69414 [Vulners]
CVSS V3.1: 7.8,
Vulners: Exploitation: Unknown
Soft:
- microsoft malware_protection_engine (-)

CVE-2026-50656 [Vulners]
CVSS V3.1: 7.8,
Vulners: Exploitation: Unknown
Soft:
- microsoft malware_protection_engine (-)

CVE-2026-33825 [Vulners]
CVSS V3.1: 7.8,
Vulners: Exploitation: True
Soft:
- microsoft defender_antimalware_platform (<4.18.26030.3011)


TTPs:
Tactics: 1
Technics: 0

ChatGPT TTPs:
do not use without manual check
T1003.002, T1068, T1559

IOCs:
File: 4
Url: 2

Soft:
Microsoft Defender, Microsoft Malware Protection Engine

Algorithms:
md5, sha1

Functions:
Get-MpComputerStatus

Win API:
CfRegisterSyncRoot

Win Services:
MsMpEng
Cyderes ShieldCrash: Testing the Claimed Microsoft Defender Zero-Day Explore the implications of ShieldCrash, a claimed zero-day vulnerability in Microsoft Defender, and its potential impact on endpoint security.
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