{"id":"CVE-2026-55007","title":"Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.","summary":"Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-415"],"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 14","affected":["exchange_server_2019_cumulative_update_14 >= 15.02.0.0 < 15.02.1544.046","exchange_server_2019_cumulative_update_15 >= 15.02.0.0 < 15.02.1748.051","exchange_server_subscription_edition_rtm >= 15.02.0.0 < 15.02.2562.049"],"published":"2026-09-08","updated":"2026-09-09","sourceUpdated":"2026-09-09T10:17:06.033","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55007","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55007","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-09T04:20:19.366481Z"},"ingestedAt":"2026-09-08T18:07:34.935Z","epss":0.00726,"epssPercentile":0.52246,"slug":"CVE-2026-55007","body":"## Overview\n\nDouble free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}