CVE-2021-1765

MEDIUM
6.5
CVSS Score
Published: April 2, 2021 at 05:54 PM UTC
Updated: June 17, 2026 at 03:32 AM UTC
3 products affected across 3 vendorsmacOSFedoraWebKitGTK

Using macOS by Apple?

Get instant alerts when new vulnerabilities affect macOS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

Description

This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. Maliciously crafted web content may violate iframe sandboxing policy.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 10.14.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.15.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.2, so it looks safe — our inference, not a vendor statement
v < 2.30.6
Affected range stops below 2.30.6, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card