Microsoft Defender for Endpoint for Mac prior 101.26042.0011 toctou
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.3 | $0-$5k | 1.26- |
Summary
A vulnerability was found in Microsoft Defender for Endpoint for Mac. It has been classified as problematic. Affected is an unknown function. The manipulation leads to toctou. This vulnerability is documented as CVE-2026-45647. The attack needs to be performed locally. There is not any exploit available. Upgrading the affected component is recommended.
Details
A vulnerability, which was classified as problematic, has been found in Microsoft Defender for Endpoint for Mac. This issue affects an unknown code block. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is integrity, and availability.
The weakness was released 06/09/2026 as confirmed security update guide (Website). It is possible to read the advisory at msrc.microsoft.com. The identification of this vulnerability is CVE-2026-45647. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.
Upgrading to version 101.26042.0011 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Product
Vendor
Name
License
Website
- Vendor: https://www.microsoft.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.9VulDB Meta Temp Score: 4.3
VulDB Base Score: 4.4
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 5.5
Vendor Vector (Microsoft): 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: ToctouCWE: CWE-367 / CWE-362
CAPEC: 🔒
ATT&CK: 🔒
Physical: Partially
Local: Yes
Remote: No
Availability: 🔒
Status: Unproven
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒
Upgrade: Defender for Endpoint for Mac 101.26042.0011
Timeline
06/09/2026 VulDB entry created06/09/2026 Advisory disclosed
06/09/2026 Countermeasure disclosed
06/09/2026 VulDB entry last update
Sources
Vendor: microsoft.comAdvisory: msrc.microsoft.com
Status: Confirmed
CVE: CVE-2026-45647 (🔒)
GCVE (CVE): GCVE-0-2026-45647
GCVE (VulDB): GCVE-100-369731
Entry
Created: 06/09/2026 20:28Updated: 06/09/2026 20:32
Changes: 06/09/2026 20:28 (20), 06/09/2026 20:29 (14), 06/09/2026 20:32 (34)
Complete: 🔍
Cache ID: 216::103
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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