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PatchSiren cyber security CVE debrief

CVE-2023-1118 Siemens CVE debrief

CVE-2023-1118 is a high-severity local use-after-free in the Linux kernel’s integrated infrared receiver/transceiver driver. According to the advisory corpus, a local user detaching an rc device could trigger a crash and potentially gain elevated privileges. CISA’s CSAF advisory ties the issue to multiple Siemens SCALANCE W700 IEEE 802.11ax products and points to Siemens’ fix guidance to update to V3.0.0 or later.

Vendor
Siemens
Product
SCALANCE WAB762-1 (6GK5762-1AJ00-6AA0)
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-02-11
Original CVE updated
2025-05-06
Advisory published
2025-02-11
Advisory updated
2025-05-06

Who should care

Siemens SCALANCE W700 owners, OT/industrial network operators, asset managers, patch coordinators, and security teams responsible for embedded Linux-based network appliances should prioritize this advisory, especially where local access to affected devices is possible.

Technical summary

The CVE description identifies a use-after-free in the Linux kernel integrated infrared receiver/transceiver driver during user detachment of an rc device. The supplied CSAF advisory maps CVE-2023-1118 to 19 Siemens SCALANCE WAB/WAM/WUB/WUM product variants and recommends updating affected devices to V3.0.0 or later. The reported impact is local denial of service and possible privilege escalation, consistent with the CVSS 3.1 vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Defensive priority

High. The flaw is locally exploitable, affects industrial networking products, and the advisory indicates potential privilege escalation in addition to crashes. If any affected SCALANCE devices are deployed, remediation should be scheduled promptly and treated as a priority maintenance item.

Recommended defensive actions

  • Inventory Siemens SCALANCE WAB/WAM/WUB/WUM devices and confirm whether any listed model is deployed.
  • Check installed firmware/software versions against Siemens advisory SSA-769027 and update affected devices to V3.0.0 or later.
  • Restrict local access to affected devices to trusted administrators only until remediation is complete.
  • Monitor for unexpected crashes, service interruptions, or abnormal device behavior on affected equipment.
  • Use the Siemens and CISA advisory links to verify model-specific remediation guidance before scheduling maintenance.

Evidence notes

Source corpus links the CVE to Siemens via CISA CSAF advisory ICSA-25-044-09 and Siemens product security advisory SSA-769027. The advisory lists 19 affected SCALANCE product variants and a vendor fix of V3.0.0 or later. The CVE was published on 2025-02-11 and the only modification in the provided timeline is a 2025-05-06 revision described as typo fixes. No KEV entry is present in the supplied corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-1118 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-1118

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2023-1118 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-1118

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-044-09.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-769027.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-769027.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-044-09

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.