Siemens CPCI85 Central Processing Communication out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Siemens CPCI85 Central Processing Communication and SICORE Base system. This affects an unknown function. Such manipulation leads to out-of-bounds write. This vulnerability is documented as CVE-2026-27664. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Siemens CPCI85 Central Processing Communication and SICORE Base system (the affected version unknown). It has been rated as critical. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.10), SICORE Base system (All versions < V26.10.0). The affected application contains an out-of-bounds write vulnerability while parsing specially crafted XML inputs. This could allow an unauthenticated attacker to exploit this issue by sending a malicious XML request, which may cause the service to crash, resulting in a denial-of-service condition.

The advisory is shared for download at cert-portal.siemens.com. This vulnerability is handled as CVE-2026-27664 since 02/23/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/28/2026).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-16181) and CERT Bund (WID-SEC-2026-0889). Once again VulDB remains the best source 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: 8.1
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.6
VulDB Temp Score: 8.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (siemens): 🔒

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
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: 🔒

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-2026-27664 (🔒)
GCVE (CVE): GCVE-0-2026-27664
GCVE (VulDB): GCVE-100-353636
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 (74), 03/26/2026 16:35 (1), 03/28/2026 04:46 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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