{"id":"CVE-2026-21535","aliases":["EUVD-2026-7572","GHSA-rx38-cw65-cmwp"],"status":"published","title":"Microsoft Teams Information Disclosure Vulnerability","description":"Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00653,"percentile":0.51642,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2026-02-19T22:06:20Z","modified":"2026-08-19T16:26:00Z","products":[{"vendor":"microsoft","product":"microsoft teams"},{"vendor":"microsoft","product":"teams"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21535","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21535"},{"url":"https://github.com/advisories/GHSA-rx38-cw65-cmwp"}],"sources":{"cve":[{"id":"CVE-2026-21535","title":"Microsoft Teams Information Disclosure Vulnerability","description":"Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-02-19T22:06:20.817Z","modified":"2026-08-19T16:26:00.273Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T13:41:42.05254Z"}],"euvd":[{"id":"EUVD-2026-7572","description":"Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-02-19T22:06:20Z","modified":"2026-08-19T16:26:00Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:01:44.172516Z"}],"ghsa":[{"id":"GHSA-rx38-cw65-cmwp","title":"Improper access control in Microsoft Teams allows an unauthorized attacker to disclose...","description":"Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-02-20T00:31:53Z","modified":"2026-02-20T00:31:59Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:06:17.487245Z"}],"nvd":[{"id":"CVE-2026-21535","description":"Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-02-19T23:16:24.217Z","modified":"2026-06-17T10:18:48.123Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:06.274729Z"}]}}