Vulnerability · Published Mar 26, 2026 · Assigned by siemens

CVE-2026-27664

High 7.5

In plain English

A high-severity out-of-bounds write in CPCI85 Central Processing/Communication from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 69.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Siemens	CPCI85 Central Processing/Communication	0 – before V26.10
Siemens	SICORE Base system	0 – before V26.10.0

Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

In plain English

Official description

Affected products (as reported)

References