CVE-2020-9850

A logic issue was addressed with improved restrictions. This issue is fixed in iOS 13.5 and iPadOS 13.5, tvOS 13.4.5, watchOS 6.2.5, Safari 13.1.1, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. A remote attacker may be able to cause arbitrary code execution.

Published: 2020-06-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-9850 is rated High Risk (72.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 82.83%, 99th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-9850

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-14 84.34% 82.83% -1.51%
2 2025-11-21 72.25% 84.34% +12.09%
3 2025-11-18 — 72.25% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-9850

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2020-9850

OS Trackers for CVE-2020-9850

vendor priority summary link
alpine critical CVE-2020-9850: 1 source package rows (webkit2gtk); 5 state rows across 5 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, edge-community); fixed 5, open 0. https://security.alpinelinux.org/vuln/CVE-2020-9850
debian not yet assigned CVE-2020-9850 not yet assigned priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2020-9850
gentoo normal CVE-2020-9850: 1 GLSA(s) (202007-11), 1 atom(s) (net-libs/webkit-gtk); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-9850
redhat medium — https://access.redhat.com/security/cve/CVE-2020-9850
suse high CVE-2020-9850 severity important: SUSE including 240 source package names (LibRaw-0.19.5-2.el8, PackageKit-1.1.12-6.el8, …), 436 product×package rows across 55 product lines (HPE Helion OpenStack 8, SUSE Enterprise Storage 5, … (55 product lines)): Fixed 436. https://www.suse.com/security/cve/CVE-2020-9850/
ubuntu medium CVE-2020-9850 medium priority: Ubuntu including 5 source packages (qtwebkit, qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk), 70 status rows across 14 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): DNE 36, ignored 19, not-affected 8, needs-triage 4, released 3. https://ubuntu.com/security/CVE-2020-9850

Affected software / configurations for CVE-2020-9850

Vendor Product Version Raw CPE
apple icloud < 7.19 cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:*
apple icloud >= 11.0, < 11.2 cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:*
apple itunes < 12.10.7 cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:*
apple safari < 13.1.1 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 13.5 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 13.5 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple tvos < 13.4.5 cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos < 6.2.5 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

References for CVE-2020-9850

cvelogic Threat Intelligence