Siemens SiPass integrated up to 2.x authorization

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 (≈)
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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.
4.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Siemens SiPass integrated up to 2.x and classified as problematic. This impacts an unknown function. The manipulation leads to authorization. This vulnerability is referenced as CVE-2025-40773. The attack needs to be initiated within the local network. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Siemens SiPass integrated up to 2.x. This issue affects an unknown part. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in SiPass integrated (All versions < V3.0). Affected server applications contains a broken access control vulnerability. The authorization mechanism lacks sufficient server-side checks, allowing an attacker to execute a specific API request. Successful exploitation allows an attacker to potentially manipulate data belonging to other users.

The advisory is shared at cert-portal.siemens.com. The identification of this vulnerability is CVE-2025-40773 since 04/16/2025. The exploitation is known to be easy. The attack needs to be done within the local network. 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 10/16/2025).

Upgrading to version 3.0 eliminates this vulnerability.

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

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

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

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔒

CNA Base Score: 3.5
CNA Vector (siemens): 🔒

CVSSv2info

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

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
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

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SiPass integrated 3.0

Timelineinfo

04/16/2025 CVE reserved
10/14/2025 +181 days Advisory disclosed
10/14/2025 +0 days VulDB entry created
10/16/2025 +2 days VulDB entry last update

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-599451
Status: Confirmed

CVE: CVE-2025-40773 (🔒)
GCVE (CVE): GCVE-0-2025-40773
GCVE (VulDB): GCVE-100-328205

Entryinfo

Created: 10/14/2025 12:01
Updated: 10/16/2025 20:51
Changes: 10/14/2025 12:01 (75), 10/16/2025 20:51 (11)
Complete: 🔍
Cache ID: 216::103

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