CVE-2023-43504

Siemens Comos remote code execution

9.6 CRITICALEPSS 0.85%

Published14 Nov 2023

Description

A vulnerability has been identified in COMOS (All versions < V10.4.4). Ptmcast executable used for testing cache validation service in affected application is vulnerable to Structured Exception Handler (SEH) based buffer overflow. This could allow an attacker to execute arbitrary code on the target system or cause denial of service condition.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeChanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Siemens Comos< 10.4.4

Remediation

Fixed in

Siemens Comos≥ 10.4.4

Frequently asked

Is CVE-2023-43504 being actively exploited?

CVE-2023-43504 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.85%.

How severe is CVE-2023-43504?

CVE-2023-43504 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.85% probability of exploitation.

Which products are affected by CVE-2023-43504?

Affected products include Siemens Comos.

How do I fix CVE-2023-43504?

Upgrade affected software to a fixed version, for example Siemens Comos 10.4.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-43504 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.