CVE-2021-30848

Name: CVE-2021-30848
Creator: NVD / NIST
Published: 2021-10-19T14:15:09.717+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.19%

Last modified Jun 17, 2026

CVE-2021-30848 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, Safari 15, iOS 15 and iPadOS 15. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, Safari 15, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.19%

64.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Apple	Safari	< 15.0
Apple	Ipados	< 14.8
Apple	Iphone Os	< 14.8
Apple	Macos	< 12.0.1

References

http://seclists.org/fulldisclosure/2021/Oct/60Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/26/9Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/1Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/2Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/4Mailing List
https://support.apple.com/en-us/HT212807Vendor Advisory
https://support.apple.com/en-us/HT212814Vendor Advisory
https://support.apple.com/en-us/HT212816Vendor Advisory
https://support.apple.com/kb/HT212869Vendor Advisory
http://seclists.org/fulldisclosure/2021/Oct/60Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/26/9Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/1Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/2Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/4Mailing List
https://support.apple.com/en-us/HT212807Vendor Advisory
https://support.apple.com/en-us/HT212814Vendor Advisory
https://support.apple.com/en-us/HT212816Vendor Advisory
https://support.apple.com/kb/HT212869Vendor Advisory

Timeline

Published: Oct 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30848?

How severe is CVE-2021-30848?

CVE-2021-30848 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30848?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30848?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST