MEDIUM
CVE-2026-45647
CWE-367Published: June 9, 2026· Updated: Jun 9, 2026
5.5
CVSS v3.1
EPSS:0.05%probability of exploitation in 30 daysPercentile:16.0th
Official Description
Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.
Technical Analysis
CVE-2026-45647 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Affected Vendors & Products
Mentioned vendors (from description):
Microsoft
CPE data not yet available in NVD for this CVE.
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
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PacketStorm
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (1)
Quick Facts
CVE IDCVE-2026-45647
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-367
CISA KEVNo
EPSS (30d)0.05%
PublishedJun 9, 2026
Related CVEs (CWE-367)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-45647 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.