Security readout for executives and security teams
Plain-English summary
This affects many Siemens RUGGEDCOM industrial networking devices. The device web service can be tied up by incomplete HTTP requests, causing a denial of service while the traffic continues. It does not expose data or change configuration, but it can disrupt management access or network equipment availability in operational environments.
Executive priority
Treat as a moderate operational-resilience issue. Prioritize exposed industrial network devices and sites where management-plane disruption could affect response, visibility, or uptime. It is less urgent than code execution or data-theft issues, but should not be ignored on operational networks.
Technical view
CVE-2022-39158 is a CWE-400 resource-consumption issue in affected Siemens RUGGEDCOM devices. Improper handling of partial HTTP requests makes devices susceptible to slowloris-style denial of service. CVSS 3.1 is 5.3, network exploitable, low complexity, no privileges, no user interaction, availability impact only.
Likely exposure
Exposure is most relevant where affected RUGGEDCOM management HTTP services are reachable from untrusted networks. The source bundle lists many RUGGEDCOM i800, M, RMC, RP, RS, RSG, RSL, and RST models, but complete version applicability should be confirmed against Siemens advisories.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. The CVSS vector records proof-of-concept exploit maturity, but the provided sources do not support claims of known real-world exploitation.
Researcher notes
The evidence supports denial of service only: confidentiality and integrity impacts are none. Do not assume all listed models are equally exploitable without matching firmware and configuration details from Siemens advisories. No exploit procedure is needed to validate exposure; focus on inventory, reachability, and vendor status.
Mitigation direction
- Identify deployed Siemens RUGGEDCOM models and firmware versions.
- Review Siemens ProductCERT advisories SSA-459643 and SSA-787941 for official update guidance.
- Restrict device management HTTP access to trusted administrative networks.
- Monitor vendor guidance for replacement, firmware, or configuration recommendations.
Validation and detection
- Compare asset inventory against Siemens advisory affected-product lists.
- Check whether management HTTP services are reachable from untrusted segments.
- Review monitoring for sustained partial HTTP connection patterns.
- Confirm remediation status against Siemens ProductCERT guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-39158 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/pdf/ssa-459643.pdfCVE reference
- https://cert-portal.siemens.com/productcert/pdf/ssa-787941.pdfCVE reference
- https://cert-portal.siemens.com/productcert/html/ssa-459643.htmlCVE reference
- https://cert-portal.siemens.com/productcert/html/ssa-787941.htmlCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.