cve-2021-39275

About this tag
CVE-2021-39275 is a high-severity vulnerability in the Apache HTTP Server that has been identified in several Siemens industrial networking products, including RUGGEDCOM NMS, SINEC NMS, and SINEMA family components. This flaw, classified as a NULL pointer dereference, can lead to denial-of-service conditions, process crashes, and in certain deployment scenarios, may enable cross-system access or remote code execution. Siemens has issued a critical advisory urging operators to apply mitigations promptly to reduce the risk of remote exploitation. Discussions on WindowsForum highlight the importance of patching this vulnerability in OT environments to maintain security and operational continuity.

  1. Critical Apache Vulnerabilities in Siemens OT Tools: SINEC NMS, SINEMA, RUGGEDCOM NMS

    Siemens has republished a critical advisory that pulls a spotlight back onto a cluster of high-severity Apache HTTP Server vulnerabilities found embedded inside several Siemens industrial networking products — most notably RUGGEDCOM NMS, SINEC NMS, and SINEMA family components — and is urging...
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    • apachevulnerabilities cve-2021-34798 cve-2021-39275 cve-2021-40438 firewall industrial networking it-ot mitigation network segmentation ot security patch management productcert ruggedcom-nms siemens siemens productcert sinec nms sinema remote connect server sinema-server vulnerability management zero trust
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    • Forum: Security Alerts