Use After Free in Apple iOS And Ipados

CVE-2021-1788

A use after free issue was addressed with improved memory management. 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. Processing maliciously crafted web content may lead to arbitrary code execution.

Vulnerability class: Use-After-Free

EPSS: 0.016 (73.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-1788?
CVE-2021-1788 is a high-severity vulnerability in Apple iOS And Ipados, classified under Use After Free. CVSS score: 8.8/10. Published 2021-04-02.
How severe is CVE-2021-1788?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-1788 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.