CVE-2021-1799

MEDIUM 6.5CVE-2021-1799 · Published 02/04/2021 · updated 17/06/2026

In short

CVE-2021-1799 is a MEDIUM (CVSS 6.5) vulnerability affecting safari (apple), webkitgtk (webkitgtk).
Chance of exploitation in the next 30 days (EPSS): 1.8%, higher than 78.0% of all vulnerabilities.
Fix: update to 14.0.3, 2.30.6 or later.

Package	Affected versions	Patched versions
safari apple	`< 14.0.3`	`14.0.3`
webkitgtk webkitgtk	`< 2.30.6`	`2.30.6`

Description

A port redirection issue was addressed with additional port validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access restricted ports on arbitrary servers.

References

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU
security.gentoo.org/glsa/202104-03 · Third Party Advisory
support.apple.com/en-us/HT212146 · Vendor Advisory
support.apple.com/en-us/HT212147 · Vendor Advisory
support.apple.com/en-us/HT212148 · Vendor Advisory
support.apple.com/en-us/HT212149 · Vendor Advisory
support.apple.com/en-us/HT212152 · Vendor Advisory

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Package

Affected versions

Patched versions

safari

apple

< 14.0.3

14.0.3

webkitgtk

< 2.30.6

2.30.6

Description

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