Use After Free in Apple Ios And Ipados

CVE-2021-30661

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead…

Vulnerability class: Use-After-Free

EPSS: 0.045 (90.5th 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)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-30661?
CVE-2021-30661 is a high-severity vulnerability in Apple Ios And Ipados, classified under Use After Free. CVSS score: 8.8/10. Published 2021-09-08.
How severe is CVE-2021-30661?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-30661 known to be exploited?
Yes. CVE-2021-30661 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.