CVE-2023-36749 — A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.16.0), RUGGEDCOM...

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Siemens RUGGEDCOM ROX MX5000, Siemens Ruggedcom Rox Mx5000 Firmware, Siemens RUGGEDCOM ROX MX5000RE…).
2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
3. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
4. Search available logs for exploit probes matching the vulnerability class (cryptography), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-327 · Use of a Broken or Risky Cryptographic Algorithm

Other CVEs with this weakness →

EPSS over time FIRST

Oct 23, 2026 → Oct 26, 2026 · 4 reading(s) · max 0.29%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
• Check TLS negotiations and unexpected certificates in the component’s traffic.

Timeline

What happened to this CVE, newest first.

• 2026
• Affected products added · siemens/ruggedcom rox mx5000, siemens/ruggedcom rox mx5000re, siemens/ruggedcom rox rx1400, siemens/ruggedcom rox rx1500
  Oct 23, 2026 · CVE Program (cve.org) e CISA ADP
• SSVC assessment updated
  Oct 23, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 23, 2026
• Affected products added · siemens/ruggedcom rox mx5000 firmware, siemens/ruggedcom rox mx5000re firmware, siemens/ruggedcom rox rx1400 firmware, s
  Oct 23, 2026 · NIST National Vulnerability Database
• CVSS changed · 7.4
  Oct 23, 2026 · NIST National Vulnerability Database
• Source status changed · → Modified
  Oct 23, 2026 · NIST National Vulnerability Database
• Record created in this database
  Oct 23, 2026 · Alertas do Telegram
• 2023
• CVE published
  Jul 11, 2023 · siemens

Source activity

Repeated readings are counted rather than listed.

• 2× References added · Oct 23, 2026 – Oct 23, 2026
• 1× Official description updated · Oct 23, 2026 – Oct 23, 2026

References

3 on the record

• cert-portal.siemens.com/productcert/pdf/ssa-146325.pdf
  Vendor Advisory, NIST National Vulnerability Database
• nvd.nist.gov/vuln/detail/CVE-2023-36749
  GitHub Security Advisories
• github.com/advisories/GHSA-pcw9-vp4g-qgm6
  GitHub Security Advisories

Elsewhere on this site

Related CVEs (same products)

• Medium CVE-2025-40948 A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.17.1), RUGGEDCOM... May 12, 2026
• Critical CVE-2025-40949 A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.17.1), RUGGEDCOM... May 12, 2026
• High CVE-2025-40947 A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.17.1), RUGGEDCOM... May 12, 2026
• High CVE-2024-56839 A vulnerability has been identified in RUGGEDCOM ROX II family (All versions < V2.17.0). Code... Dec 9, 2025
• High CVE-2024-56838 A vulnerability has been identified in RUGGEDCOM ROX II family (All versions < V2.17.0). The SCEP... Dec 9, 2025
• High CVE-2024-56840 A vulnerability has been identified in RUGGEDCOM ROX II family (All versions < V2.17.0). Under... Dec 9, 2025

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No fixed version, patch or mitigation documented.
• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2023-36749 is "A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.16.0), RUGGEDCOM...", rated High. It affects RUGGEDCOM ROX MX5000 (Siemens); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.4 describes technical severity. EPSS 0.29% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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