Microsoft 365 Copilot Business Chat command injection

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft 365 Copilot Business Chat. It has been classified as critical. The impacted element is an unknown function. The manipulation leads to command injection. This vulnerability is referenced as CVE-2025-53774. Remote exploitation of the attack is possible. No exploit is available. This product is a managed service. This means that users are not able to maintain vulnerability countermeasures themselves.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft 365 Copilot Business Chat (unknown version). This issue affects an unknown code block. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

The advisory is shared at msrc.microsoft.com. The identification of this vulnerability is CVE-2025-53774 since 07/09/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/14/2025). MITRE ATT&CK project uses the attack technique T1202 for this issue.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-23956) and CERT Bund (WID-SEC-2025-1746). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Microsoft 365 Copilot

Productinfo

Type

Vendor

Name

License

Managed Service

  • yes

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CNA Base Score: 6.5
CNA Vector (microsoft): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: 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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/09/2025 CVE reserved
08/08/2025 +30 days Advisory disclosed
08/08/2025 +0 days VulDB entry created
08/14/2025 +6 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-53774 (🔒)
GCVE (CVE): GCVE-0-2025-53774
GCVE (VulDB): GCVE-100-319205
EUVD: 🔒
CERT Bund: WID-SEC-2025-1746 - Microsoft 365 Copilot: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen

Entryinfo

Created: 08/08/2025 07:46
Updated: 08/14/2025 20:20
Changes: 08/08/2025 07:46 (63), 08/08/2025 13:38 (7), 08/08/2025 15:10 (1), 08/14/2025 20:20 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!