{"id":"CVE-2026-66360","title":"The ISO Presentation layer contains a flaw in the handling of specific \nparameters during normal mode negotiation","summary":"The ISO Presentation layer contains a flaw in the handling of specific \nparameters during normal mode negotiation. A missing length check in the\n processing of the encoded presentation data allows an attacker \ncontrolled field with a zer…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"published":"2026-07-30","updated":"2026-09-08","sourceUpdated":"2026-09-08T19:30:43.093","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-66360","references":[{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-10.json","label":"ics-cert@hq.dhs.gov"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-10","label":"ics-cert@hq.dhs.gov"}],"tags":["nvd"],"epss":0.00278,"epssPercentile":0.20527,"ingestedAt":"2026-09-08T20:10:03.155Z","slug":"CVE-2026-66360","body":"## Overview\n\nThe ISO Presentation layer contains a flaw in the handling of specific \nparameters during normal mode negotiation. A missing length check in the\n processing of the encoded presentation data allows an attacker \ncontrolled field with a zero length value to trigger a bounded heap over\n read. This condition occurs before MMS session establishment, a crafted\n TCP/102 connection attempt can trigger the issue. The resulting over \nread causes the process to terminate, leading to a denial of service \ncondition.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}