{"id":"CVE-2026-62918","aliases":["EUVD-2026-54316","GHSA-p2wf-cwq4-f5gj"],"status":"published","title":"Microsoft Teams Spoofing Vulnerability","description":"Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00495,"percentile":0.42977,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-08-06T22:37:40Z","modified":"2026-11-10T21:57:13Z","products":[{"vendor":"microsoft","product":"microsoft teams"},{"vendor":"microsoft","product":"teams"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62918","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62918"},{"url":"https://github.com/advisories/GHSA-p2wf-cwq4-f5gj"}],"sources":{"cve":[{"id":"CVE-2026-62918","title":"Microsoft Teams Spoofing Vulnerability","description":"Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-06T22:37:40.116Z","modified":"2026-11-10T21:57:13.205Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-10T22:48:52.144232Z"}],"euvd":[{"id":"EUVD-2026-54316","description":"Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-06T22:37:40Z","modified":"2026-11-10T21:57:13Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:18.338578Z"}],"ghsa":[{"id":"GHSA-p2wf-cwq4-f5gj","title":"Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized...","description":"Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-07T00:31:23Z","modified":"2026-08-07T00:31:33Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:10:11.041675Z"}],"nvd":[{"id":"CVE-2026-62918","description":"Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-07T00:16:36.833Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:12:35.386166Z"}]}}