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CVE-2026-66360

7.5 · HIGH

The ISO Presentation layer contains a flaw in the handling of specific parameters during normal mode negotiation.

Published Jul 30, 2026CWE-125EPSS 0.49%

Overview

CVE-2026-66360 is a high-severity vulnerability. It was published on July 30, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-10.jsonCISAwww.cisa.gov/news-events/ics-advisories/icsa-26-211-10

How CyberStrike helps

Frequently asked questions

What is CVE-2026-66360?

CVE-2026-66360 is a high-severity vulnerability. It was published on July 30, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-66360?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-66360?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-66360?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-66360 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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