| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.3 | $0-$5k | 0.72 |
Summary
A vulnerability, which was classified as critical, was found in Microsoft 365 Copilot. This affects an unknown function. Executing a manipulation can lead to command injection. This vulnerability is registered as CVE-2026-42824. It is possible to launch the attack remotely. No exploit is available. This product is available as a managed service. Users are not able to maintain vulnerability countermeasures themselves.
Details
A vulnerability has been found in Microsoft 365 Copilot (affected version not known) and classified as critical. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality. CVE summarizes:
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.
The advisory is shared for download at msrc.microsoft.com. This vulnerability was named CVE-2026-42824 since 04/30/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/07/2026). The MITRE ATT&CK project declares the attack technique as T1202.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-34334). Once again VulDB remains the best source for vulnerability data.
Product
Vendor
Name
License
Managed Service
- yes
Website
- Vendor: https://www.microsoft.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.4VulDB Meta Temp Score: 5.3
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 6.5
CNA 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: Command injectionCWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
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
Status: 🔍0-Day Time: 🔒
Timeline
04/30/2026 CVE reserved06/05/2026 Advisory disclosed
06/05/2026 VulDB entry created
06/07/2026 VulDB entry last update
Sources
Vendor: microsoft.comAdvisory: msrc.microsoft.com
Status: Confirmed
CVE: CVE-2026-42824 (🔒)
GCVE (CVE): GCVE-0-2026-42824
GCVE (VulDB): GCVE-100-368860
EUVD: 🔒
Entry
Created: 06/05/2026 08:09Updated: 06/07/2026 01:53
Changes: 06/05/2026 08:09 (61), 06/07/2026 01:53 (1)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.
No comments yet. Languages: en.
Please log in to comment.