VDB-308893 · CVE-2025-0020 · EUVD-2025-14677

ArcGIS client_credentials OAuth 2.0 API violation of secure design principles

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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in ArcGIS. This affects an unknown part of the component client_credentials OAuth 2.0 API. This manipulation causes violation of secure design principles. This vulnerability appears as CVE-2025-0020. The attack may be initiated remotely. In addition, an exploit is available. This product is provided as a managed service, meaning users do not have the ability to maintain vulnerability countermeasures themselves.

Detailsinfo

A vulnerability has been found in ArcGIS (the affected version is unknown) and classified as critical. Affected by this vulnerability is an unknown code of the component client_credentials OAuth 2.0 API. The manipulation with an unknown input leads to a violation of secure design principles vulnerability. The CWE definition for the vulnerability is CWE-657. The product violates well-established principles for secure design. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Violation of Secure Design Principles, Hidden Functionality, Incorrect Provision of Specified Functionality vulnerability in ArcGIS (Authentication) allows Privilege Abuse, Manipulating Hidden Fields, Configuration/Environment Manipulation. The ArcGIS client_credentials OAuth 2.0 API implementation does not adhere to the RFC/standards; This hidden (known and by-design, but undocumented) functionality enables a requestor (referred to as client in RFC 6749) to request an, undocumented, custom token expiration from ArcGIS (referred to as authorization server in RFC 6749).

The bug was discovered 04/21/2025. The weakness was presented by Erez Kalman. The advisory is shared at vulsec.org. This vulnerability is known as CVE-2025-0020 since 11/06/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

It is possible to download the exploit at vulsec.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 24 days. During that time the estimated underground price was around .

This product is available as a managed service. Users are not able to maintain vulnerability countermeasures themselves.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-14677). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

ArcGIS

Managed Service

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Violation of secure design principles
CWE: CWE-657
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

11/06/2024 🔍
04/21/2025 +165 days 🔍
04/22/2025 +1 days 🔍
05/14/2025 +22 days 🔍
05/14/2025 +0 days 🔍
05/14/2025 +0 days 🔍
05/14/2025 +0 days 🔍
05/15/2025 +1 days 🔍

Sourcesinfo

Advisory: vulsec.org
Researcher: Erez Kalman
Status: Not defined

CVE: CVE-2025-0020 (🔍)
GCVE (CVE): GCVE-0-2025-0020
GCVE (VulDB): GCVE-100-308893
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/14/2025 15:29
Updated: 05/15/2025 14:25
Changes: 05/14/2025 15:29 (67), 05/14/2025 15:48 (1), 05/14/2025 16:09 (1), 05/15/2025 12:26 (2), 05/15/2025 14:21 (7), 05/15/2025 14:24 (7), 05/15/2025 14:25 (3)
Complete: 🔍
Committer: Anonymous User
Cache ID: 216::103

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