{"id":"CVE-2026-70279","title":"Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.","summary":"Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.","severity":"critical","cvss":9.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","cwe":["CWE-79"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T23:18:06.873","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70279","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70279","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-13T19:43:29.046Z","vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","affected":["exchange_server_2016_cumulative_update_23 >= 15.01.0.0 < 15.01.2507.077","exchange_server_2019_cumulative_update_14 >= 15.02.0.0 < 15.02.1544.050","exchange_server_2019_cumulative_update_15 >= 15.02.0.0 < 15.02.1748.055","exchange_server_subscription_edition_rtm >= 15.02.0.0 < 15.02.2562.056"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-13T22:08:56.698883Z"},"epss":0.01286,"epssPercentile":0.69994,"slug":"CVE-2026-70279","body":"## Overview\n\nImproper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":51.2,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}