CVE-2020-9952
Processing maliciously crafted web content may lead to a cross site scripting attack.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An input validation issue was addressed with improved input validation. This issue is fixed in iOS 14.0 and iPadOS 14.0, tvOS 14.0, watchOS 7.0, Safari 14.0, iCloud for Windows 11.4, iCloud for Windows 7.21. Processing maliciously crafted web content may lead to a cross site scripting attack.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- EPSS
- 1.50% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- apple/icloud · apple/safari · apple/ipados · apple/iphone os · apple/tvos · apple/watchos · webkit/webkitgtk\+
- Source
- product-security@apple.com
EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://seclists.org/fulldisclosure/2020/Nov/18Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/19Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/22Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/23/3Mailing List
- https://security.gentoo.org/glsa/202012-10Third Party Advisory
- https://support.apple.com/HT211843Release Notes, Vendor Advisory
- https://support.apple.com/HT211844Release Notes, Vendor Advisory
- https://support.apple.com/HT211845Release Notes, Vendor Advisory
- https://support.apple.com/HT211846Release Notes, Vendor Advisory
- https://support.apple.com/HT211847Release Notes, Vendor Advisory
- https://support.apple.com/HT211850Vendor Advisory
- http://seclists.org/fulldisclosure/2020/Nov/18Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/19Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/22Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/23/3Mailing List
- https://security.gentoo.org/glsa/202012-10Third Party Advisory
- https://support.apple.com/HT211843Release Notes, Vendor Advisory
- https://support.apple.com/HT211844Release Notes, Vendor Advisory
- https://support.apple.com/HT211845Release Notes, Vendor Advisory
- https://support.apple.com/HT211846Release Notes, Vendor Advisory
- https://support.apple.com/HT211847Release Notes, Vendor Advisory
- https://support.apple.com/HT211850Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.