Microsoft Azure Cognitive Service for Language Custom Question Answering server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.0$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Microsoft Azure Cognitive Service for Language. This vulnerability affects unknown code of the component Custom Question Answering. This manipulation causes server-side request forgery. The identification of this vulnerability is CVE-2025-64663. It is possible to initiate the attack remotely. There is no exploit available. This product is a managed service, indicating that users are not permitted to maintain vulnerability countermeasures themselves.

Detailsinfo

A vulnerability has been found in Microsoft Azure Cognitive Service for Language (affected version not known) and classified as critical. Affected by this vulnerability is some unknown functionality of the component Custom Question Answering. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at msrc.microsoft.com. This vulnerability is known as CVE-2025-64663 since 11/07/2025. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/17/2026).

The vulnerability is also documented in the databases at EUVD (EUVD-2025-204416) and CERT Bund (WID-SEC-2025-2890). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Microsoft Azure Cosmos DB
  • Microsoft Azure

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: 9.2
VulDB Meta Temp Score: 9.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 9.9
CNA Vector (microsoft): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/07/2025 CVE reserved
12/19/2025 +42 days Advisory disclosed
12/19/2025 +0 days VulDB entry created
01/17/2026 +29 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-64663 (🔒)
GCVE (CVE): GCVE-0-2025-64663
GCVE (VulDB): GCVE-100-337549
EUVD: 🔒
CERT Bund: WID-SEC-2025-2890 - Microsoft Azure Komponenten: Mehrere Schwachstellen

Entryinfo

Created: 12/19/2025 08:17
Updated: 01/17/2026 03:47
Changes: 12/19/2025 08:17 (62), 12/20/2025 06:41 (7), 01/15/2026 01:09 (1), 01/17/2026 03:47 (11)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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