CVE-2026-45584: high-severity vulnerability in Microsoft Malware Protection Engine
Microsoft Defender Remote Code Execution Vulnerability
Published · Updated
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.1epss 0.9%
from disclosure to weapon2 days
Published on NVDMay 20
1st PoC+2d
exploitation probability
0.9%top 42% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft Malware Protection Enginepublic PoCs found — 1
githubgithub.com/96613686/CVE-2026-45584★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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