CVE-2026-66360
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk41th percentile - higher than 41% of all known CVEs
Summary
The ISO Presentation layer has a flaw in handling parameters during normal mode negotiation. A missing length check allows an attacker-controlled zero-length field to trigger a bounded heap over read before MMS session establishment. A crafted TCP/102 connection can cause the process to terminate, leading to a denial of service.
Risk Assessment
A remote attacker can crash the process, causing service disruption and potentially impacting industrial systems.
Recommendation
Apply a security update from the vendor of the software implementing the ISO Presentation layer.
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Original NVD description (English source)
The ISO Presentation layer contains a flaw in the handling of specific parameters during normal mode negotiation. A missing length check in the processing of the encoded presentation data allows an attacker controlled field with a zero length value to trigger a bounded heap over read. This condition occurs before MMS session establishment, a crafted TCP/102 connection attempt can trigger the issue. The resulting over read causes the process to terminate, leading to a denial of service condition.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

