Question 1

What is CVE-2026-55011?

Accepted Answer

CVE-2026-55011 is a high-severity software vulnerability with a CVSS score of 7.8.

Question 2

Is CVE-2026-55011 being actively exploited?

Accepted Answer

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 0%.

Question 3

What products does CVE-2026-55011 affect?

Accepted Answer

Tracked products affected include Microsoft Defender (Malware Protection Engine), Malware Protection Engine. Check the version you run to see whether it is affected.

Question 4

How do I fix CVE-2026-55011?

Accepted Answer

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2026-55011

Summary

Affected products we track (2)

Recommendation

Additional information