CVE-2021-1870

CVE	CVE-2021-1870
State	PUBLIC
Assigner	[email protected]
Source Priority	CVE Program / NVD first with legacy fallback
Published	2021-04-02 19:15:00 UTC
Updated	2023-11-07 03:28:00 UTC
Description	A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

EPSS: 0.011510000 probability, percentile 0.784420000 (date 2026-04-01)

CISA KEV: Listed on 2021-11-03; due 2021-11-17; ransomware use Unknown

Problem Types: NVD-CWE-noinfo

Vendor	Apple
Product	iOS, iPadOS, and macOS
Name	Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability
Required Action	Apply updates per vendor instructions.
Notes	https://nvd.nist.gov/vuln/detail/CVE-2021-1870

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Apple	Ipad Os	All	All	All	All
Operating System	Apple	Iphone Os	All	All	All	All
Operating System	Apple	Macos	All	All	All	All
Operating System	Apple	Mac Os X	All	All	All	All
Operating System	Apple	Mac Os X	10.15.7	-	All	All
Operating System	Apple	Mac Os X	10.15.7	security_update_2020-001	All	All
Operating System	Apple	Mac Os X	10.15.7	supplemental_update	All	All
Operating System	Fedoraproject	Fedora	32	All	All	All
Operating System	Fedoraproject	Fedora	33	All	All	All
Application	Webkitgtk	Webkitgtk	All	All	All	All

Reference	Source	Link	Tags
WebkitGTK+: Multiple vulnerabilities (GLSA 202104-03) — Gentoo security	GENTOO	security.gentoo.org
About the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave - Apple Support	MISC	support.apple.com
[SECURITY] Fedora 33 Update: webkit2gtk3-2.32.0-1.fc33 - package-announce - Fedora Mailing-Lists		lists.fedoraproject.org
[SECURITY] Fedora 33 Update: webkit2gtk3-2.32.0-1.fc33 - package-announce - Fedora Mailing-Lists	FEDORA	lists.fedoraproject.org
About the security content of iOS 14.4 and iPadOS 14.4 - Apple Support	MISC	support.apple.com
[SECURITY] Fedora 32 Update: webkit2gtk3-2.30.6-1.fc32 - package-announce - Fedora Mailing-Lists	FEDORA	lists.fedoraproject.org
[SECURITY] Fedora 32 Update: webkit2gtk3-2.30.6-1.fc32 - package-announce - Fedora Mailing-Lists		lists.fedoraproject.org
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis
CISA Known Exploited Vulnerabilities catalog	CISA	www.cisa.gov	kev

No vendor comments have been submitted for this CVE.

159499 Oracle Enterprise Linux Security Update for GNOME (ELSA-2021-4381)
174960 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:1430-1)
174986 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:1499-1)
178515 Debian Security Update for webkit2gtk (DSA 4877-1)
179755 Debian Security Update for webkit2gtkwpewebkit (CVE-2021-1870)
198312 Ubuntu Security Notification for Webkit2gtk Vulnerabilities (USN-4894-1)
239811 Red Hat Update for gnome security (RHSA-2021:4381)
281404 Fedora Security Update for webkit2gtk3 (FEDORA-2021-619711d709)
281405 Fedora Security Update for webkit2gtk3 (FEDORA-2021-864dc37032)
281406 Fedora Security Update for webkit2gtk3 (FEDORA-2021-8070916f7a)
296067 Oracle Solaris 11.4 Support Repository Update (SRU) 33.94.0 Missing (CPUAPR2021)
355438 Amazon Linux Security Advisory for webkitgtk4 : ALAS2-2023-2088
501711 Alpine Linux Security Update for webkit2gtk
501939 Alpine Linux Security Update for webkit2gtk
505518 Alpine Linux Security Update for webkit2gtk
710013 Gentoo Linux WebkitGTK+ Multiple Vulnerabilities (GLSA 202104-03)
750239 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:0637-1)
750655 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:1990-1)
940070 AlmaLinux Security Update for GNOME (ALSA-2021:4381)