Siemens CPCI85 Central Processing up to 26.19.x Web API improper authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k1.70-

Summaryinfo

A vulnerability categorized as critical has been discovered in Siemens CPCI85 Central Processing, Communication and SICORE Base system up to 26.19.x. This impacts an unknown function of the component Web API. Such manipulation leads to improper authorization. This vulnerability is referenced as CVE-2026-54801. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Siemens CPCI85 Central Processing, Communication and SICORE Base system up to 26.19.x. Affected by this issue is an unknown functionality of the component Web API. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application contains insufficient validation of authentication credentials when processing administrative account modifications through the web API. This could allow an authenticated attacker to bypass security controls and gain unauthorized elevated privileges.

The advisory is available at cert-portal.siemens.com. This vulnerability is handled as CVE-2026-54801 since 06/16/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/09/2026). This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

Upgrading to version 26.20 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-42596). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: CPCI85 Central Processing/Communication/SICORE Base system 26.20

Timelineinfo

06/16/2026 CVE reserved
07/09/2026 +23 days Advisory disclosed
07/09/2026 +0 days VulDB entry created
07/09/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: siemens.com

Advisory: cert-portal.siemens.com
Status: Confirmed

CVE: CVE-2026-54801 (🔒)
GCVE (CVE): GCVE-0-2026-54801
GCVE (VulDB): GCVE-100-377210
EUVD: 🔒

Entryinfo

Created: 07/09/2026 16:40
Updated: 07/09/2026 18:41
Changes: 07/09/2026 16:40 (53), 07/09/2026 18:41 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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