CVE-2021-1795

Name: CVE-2021-1795
Creator: NVD / NIST
Published: 2021-04-02T19:15:19.303+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.09%

Last modified Jun 17, 2026

CVE-2021-1795 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. EPSS estimates a 2.09% chance of exploitation in the next 30 days.

Description

An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.09%

79.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Apple	Ipad Os	< 14.4
Apple	Iphone Os	< 14.4

References

https://support.apple.com/en-us/HT212146Vendor Advisory
https://support.apple.com/en-us/HT212146Vendor Advisory

Timeline

Published: Apr 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-1795?

An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.

How severe is CVE-2021-1795?

CVE-2021-1795 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.09% probability of exploitation in the next 30 days.

How do I fix CVE-2021-1795?

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-2021-1795?

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

Scan your code now

Source: NVD / NIST