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CVE-2026-66360 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-10.json	[email protected]	AdvisoryBundleRemedy
https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-10	[email protected]	AdvisoryBundleRemedy

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]

Affected Products

Product	Versions
ISO Presentation	< 1.6.2 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 1.6.2moderate effort Mitigation:low effort Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs).

Product

Versions

ISO Presentation

< 1.6.2 (semver)

CPE

No CPEs found in CPE dictionary for this product.

Remediation

Upgrade: 1.6.2moderate effort
Mitigation:low effort
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs).

Change History

2 change records found show changes

Date	Action	Recorded By
Jul 31, 2026	CVE Modified	CISA-ADP
Jul 30, 2026	New CVE Received	[email protected]