Assessment
Null pointer dereference in Microsoft Defender allows an unauthorized attacker to execute code over a network.
- Severity
- Critical
- CVSS base score
- 8.8
- Impact
- Remote Code Execution
- Exploitation detected
- No known exploitation (MSRC assessment)
- Exploitability
- Exploitation Less Likely
- Publicly disclosed
- No (MSRC assessment)
- EPSS · 30-day forecast
- No EPSS score collected
- Customer action
- Required: follow the MSRC remediation guidance
More details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Public detection template
- No Nuclei template is listed in the current collected catalog
- Component
- Microsoft Defender
- Weakness
- CWE-476: NULL Pointer Dereference
- Issued by
- Microsoft
- Last revised
- 10 Nov 2026
CVSS 3.1 base metricsRed raises the risk · green lowers it
- Attack vector
- NetworkAV:N
- Attack complexity
- LowAC:L
- Privileges required
- NonePR:N
- User interaction
- RequiredUI:R
- Scope
- UnchangedS:U
- Confidentiality
- HighC:H
- Integrity
- HighI:H
- Availability
- HighA:H
Updates that fix it
0 KBsNo KB listed
No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.
Affected products
System Center
1 affected product
- Microsoft Malware Protection Engine
Page history
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