What is CVE-2026-27663?

CVE-2026-27663 is a medium-severity vulnerability in Siemens Cpci85 Central Processing/communication, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-03-26.

How severe is CVE-2026-27663?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Siemens Cpci85 Central Processing/communication

CVE-2026-27663

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…

EPSS: 0.000 (0.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Siemens Cpci85 Central Processing/communication — versions 0
Siemens Rtum85 Rtu Base — versions 0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cert-portal.siemens.com/productcert/html/ssa-246443.html

Frequently asked questions

What is CVE-2026-27663?: CVE-2026-27663 is a medium-severity vulnerability in Siemens Cpci85 Central Processing/communication, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-03-26.
How severe is CVE-2026-27663?: Medium severity. CVSS v3 base score is 6.5 out of 10.