{"id":"CVE-2021-1857","aliases":["EUVD-2021-7321","GHSA-gr6c-576g-h3q2"],"status":"published","title":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01224,"percentile":0.69038,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-665"],"published":"2021-09-08T14:44:51Z","modified":"2026-06-17T03:32:40Z","products":[{"vendor":"apple","product":"icloud"},{"vendor":"apple","product":"icloud for windows"},{"vendor":"apple","product":"ios and ipados"},{"vendor":"apple","product":"ipados"},{"vendor":"apple","product":"iphone_os"},{"vendor":"apple","product":"itunes"},{"vendor":"apple","product":"itunes for windows"},{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"},{"vendor":"apple","product":"tvos"},{"vendor":"apple","product":"watchos"}],"references":[{"url":"https://support.apple.com/en-us/HT212317","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212323","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212324","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212325","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212326","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212327","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212319","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212321","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1857"},{"url":"https://github.com/advisories/GHSA-gr6c-576g-h3q2"}],"sources":{"cve":[{"id":"CVE-2021-1857","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.","status":"published","published":"2021-09-08T14:44:51Z","modified":"2024-08-03T16:25:06.165Z","updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-7321","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.","status":"published","published":"2021-09-08T14:44:51Z","modified":"2024-08-03T16:25:06Z","updated_at":"2026-11-03T03:25:14.678157Z"}],"ghsa":[{"id":"GHSA-gr6c-576g-h3q2","title":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.","status":"published","published":"2022-05-24T19:13:33Z","modified":"2023-01-30T05:01:57Z","cwes":["CWE-665"],"updated_at":"2026-11-02T14:46:31.662536Z"}],"nvd":[{"id":"CVE-2021-1857","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.","status":"published","published":"2021-09-08T15:15:11.453Z","modified":"2026-06-17T03:32:40.447Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-665"],"updated_at":"2026-11-02T14:06:58.05696Z"}]}}