Siemens CPCI85 Central Processing Communication allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Siemens CPCI85 Central Processing Communication and RTUM85 RTU Base. The impacted element is an unknown function. This manipulation causes allocation of resources. This vulnerability is registered as CVE-2026-27663. The attack requires access to the local network. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Siemens CPCI85 Central Processing Communication and RTUM85 RTU Base (affected version not known). It has been declared as critical. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.10), RTUM85 RTU Base (All versions < V26.10). The affected application contains denial-of-service (DoS) vulnerability. The remote operation mode is susceptible to a resource exhaustion condition when subjected to a high volume of requests. Sending multiple requests can exhaust resources, preventing parameterization and requiring a reset or reboot to restore functionality.

It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is known as CVE-2026-27663 since 02/23/2026. The exploitation appears to be easy. The attack can only be initiated within the local network. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-16179) and CERT Bund (WID-SEC-2026-0889). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Siemens SICAM

Productinfo

Vendor

Name

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: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

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

CVSSv2info

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

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: 🔒

Timelineinfo

02/23/2026 CVE reserved
03/26/2026 +31 days Advisory disclosed
03/26/2026 +0 days VulDB entry created
03/28/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-246443
Status: Confirmed

CVE: CVE-2026-27663 (🔒)
GCVE (CVE): GCVE-0-2026-27663
GCVE (VulDB): GCVE-100-353635
EUVD: 🔒
CERT Bund: WID-SEC-2026-0889 - Siemens SICAM: Mehrere Schwachstellen erm&ouml;glichen Denial of Service

Entryinfo

Created: 03/26/2026 15:32
Updated: 03/28/2026 04:46
Changes: 03/26/2026 15:32 (73), 03/26/2026 16:35 (1), 03/28/2026 04:46 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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