CVE-2026-54798Network attack vector

Authenticated web-process crash via HTTP debugging interface

Published Jul 9, 2026 · Updated Jul 9, 2026

Active debug code in Siemens CPCI85 before 26.20 and SICORE Base system before 26.20.0 allows remote authenticated users to crash the web process. Siemens has not disclosed the endpoint names or request fields; it reports that invoking the enabled HTTP debugging interface crashes the web process. The attack requires valid credentials and interrupts only the affected web service; no confidentiality or integrity impact is reported.

CVSS severity7.1
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Active debug code in Siemens CPCI85 before 26.20 and SICORE Base system before 26.20.0 allows remote authenticated users to crash the web process. Siemens has not disclosed the endpoint names or request fields; it reports that invoking the enabled HTTP debugging interface crashes the web process. The attack requires valid credentials and interrupts only the affected web service; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2026-54798
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Siemens
Product
SICORE Base system
Classifications
CWE-489, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V26.20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SICORE Base systemversion=0 <V26.20.0
Siemens · CPCI85 Central Processing/Communicationversion=0 <V26.20

Published CVSS scores

6.5Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1Siemens ProductCERTCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-489Active Debug Code
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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