CVE intelligence and bounded remediation

CVE-2021-37181 — Siemens Cerberus Dms security vulnerability

Critical CVSS 10

A vulnerability has been identified in Cerberus DMS V4.0 (All versions), Cerberus DMS V4.1 (All versions), Cerberus DMS V4.2 (All versions), Cerberus DMS V5.0 (All versions < v5.0 QU1), Desigo CC Compact V4.0 (All versions), Desigo CC Compact V4.1 (All versions), Desigo CC Compact V4.2 (All versions), Desigo CC Compact V5.0 (All versions < V5.0 QU1), Desigo CC V4.0 (All versions), Desigo CC V4.1 (All versions), Desigo CC V4.2 (All versions), Desigo CC V5.0 (All versions < V5.0 QU1). The application deserialises untrusted data without sufficient validations, that could result in an arbitrary deserialization. This could allow an unauthenticated attacker to execute code in the affected system. The CCOM communication component used for Windows App / Click-Once and IE Web / XBAP client connectivity are affected by the vulnerability.

Severity
Critical
CVSS
10 (3.1)
Published
2021-09-14
CISA KEV
Not currently listed
Ecosystem
windows/system
Weaknesses
CWE-502

Affected products

  • siemens / cerberus_dms / 4.0
  • siemens / cerberus_dms / 4.1
  • siemens / cerberus_dms / 4.2
  • siemens / cerberus_dms / 5.0
  • siemens / desigo_cc / 4.0
  • siemens / desigo_cc / 4.1

Showing 6 representative product identities from 12 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Unsafe deserialization and object reconstruction

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Check exposure

  • Inventory serialization formats accepted from requests, queues, caches, files, cookies, and cross-service messages.
  • Trace whether untrusted input can select classes, types, callbacks, constructors, or object hooks during decoding.
  • Identify signing, schema validation, trust-boundary, and compatibility settings for each decoder.

Remediate safely

  • Replace native object deserialization with a data-only format and explicit schema validation.
  • If replacement is not immediate, use a safe decoder with a minimal type allowlist and disable polymorphic or executable hooks.
  • Update the affected library and add inert tests for unknown types, extra fields, malformed nesting, and unsigned data.

Authoritative sources

Complete CVE record and remediation plan

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