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TI-2026-22044 Aliases CVE-2026-27663GHSA-j3fp-8j72-vf4g

Resource allocation without limits in Siemens CPCI85 Central Processing/Communication

Priority LOW 31CWE-770Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00282 20th percentileScored 2026-11-07
Fix Fixed CPCI85 Central Processing/Communication (Siemens): V26.10RTUM85 RTU Base (Siemens): V26.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SiemensCPCI85 Central Processing/Communicationbefore V26.10V26.10Patch availableCNA
SiemensRTUM85 RTU Basebefore V26.10V26.10Patch availableCNA
  • CPCI85 Central Processing/Communication VendorSiemens Affected before V26.10 Fixed in V26.10 Patch available CNA
  • RTUM85 RTU Base VendorSiemens Affected before V26.10 Fixed in V26.10 Patch available CNA

Remediation

  • Fix · CNA CPCI85 Central Processing/Communication (Siemens) Fixed in V26.10
  • Fix · CNA RTUM85 RTU Base (Siemens) Fixed in V26.10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Siemens CPCI85 Central Processing/Communication V26.10

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-22045 Out-of-bounds write in Siemens CPCI85 Central Processing/CommunicationPriority MEDIUM 44
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27663
  2. 2026-10-03 Alias added: GHSA-j3fp-8j72-vf4g

References

Other 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
See all 2487 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences