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CVE-2022-44698: Microsoft Defender SmartScreen Security Feature Bypass Vulnerability

criticalknown exploitedCVE-2022-44698
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Defender SmartScreen contains a security feature bypass vulnerability that could allow an attacker to evade Mark of the Web (MOTW) defenses via a specially crafted malicious file.

CSIRTS triage

vendor: Microsoftproduct: Defender SmartScreenAuthentication bypass
What
A security feature bypass vulnerability could allow an attacker to evade Mark of the Web defenses via a malicious file.
Who is affected
Users of Microsoft Defender SmartScreen.
Urgency
Remediation is urgent as the vulnerability is critical and being exploited.
Action
Update Microsoft Defender to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-12-13
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-44698

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2022-44698coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Defender SmartScreen

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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