CVE-2026-45607
HighUpdated
Published: 09 June 2026
Published
09 June 2026
Modified
17 June 2026
KEV Added
—
Patch
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CVSS Score v3.1
8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0036
27.6th percentile
Summary
CVE-2026-45607 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Microsoft Windows 11 23H2. Its CVSS base score is 8.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 27.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-35686
Vulnerability details
Out-of-bounds read in Windows Hyper-V allows an unauthorized attacker to execute code locally.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
Why these techniques?
OOB read in Hyper-V directly enables local code execution, mapping to exploitation for privilege escalation.
Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0
Affected Assets
microsoft
windows 10 1607
≤ 10.0.14393.9234
microsoft
windows 10 1809
≤ 10.0.17763.8880
microsoft
windows 10 21h2
≤ 10.0.19044.7417
microsoft
windows 10 22h2
≤ 10.0.19045.7417
microsoft
windows 11 23h2
≤ 10.0.22631.7219 · ≤ 10.0.22631.7219
microsoft
windows 11 24h2
≤ 10.0.26100.8655 · ≤ 10.0.26100.8655
microsoft
windows 11 25h2
≤ 10.0.26200.8655 · ≤ 10.0.26200.8655
microsoft
windows 11 26h1
≤ 10.0.28000.2269 · ≤ 10.0.28000.2269
microsoft
windows server 2016
≤ 10.0.14393.9234
microsoft
windows server 2019
≤ 10.0.17763.8880
+2 more product configuration(s) — see NVD for full list
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.