Microsoft Security Update Guide · Defender
Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability
Published
What does this mean?
- Elevation of Privilege. An attacker can gain more rights than they should have, for example admin rights.
- It can be exploited with access to the device itself, with an ordinary user account and without any user action.
- CVSS 5.5 out of 10: medium. Microsoft rates it Important.
- No attacks reported; Microsoft expects exploitation to be less likely.
- What should you do? Install the security update for the version you run (or a later cumulative update):
- Microsoft Defender for Endpoint for Mac: KBRelease Notes
101.26042.0011
- Microsoft Defender for Endpoint for Mac: KBRelease Notes
Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.
Key facts
Released
9 jun 2026
Impact
Elevation of Privilege
Max severity
Important
Weakness
CVSS 3.1
5.5 / 4.8 (base / temporal)
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:CPublicly disclosed
No
Exploited
No
Exploitability assessment
Exploitation Less Likely
Customer action required
Yes
Links
CVSS metrics
| Base score metrics | |
|---|---|
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity | High |
| Availability | None |
| Temporal score metrics | |
| Exploit Code Maturity | Unproven |
| Remediation Level | Official Fix |
| Report Confidence | Confirmed |
Affected products and updates
| Product | Update | Build |
|---|---|---|
| Microsoft Defender for Endpoint for Mac | KBRelease Notes | 101.26042.0011 |
Revisions
| Version | Date | Note |
|---|---|---|
| 1 | 9 jun 2026 | Information published. |
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Source: Microsoft Security Update Guide. 365Fanatic is not affiliated with Microsoft.
