CVE-2026-20644

Name: CVE-2026-20644
Creator: NVD / NIST
Published: 2026-02-11T23:16:07.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2026-20644 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.21%

11.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apple	Safari	< 26.3
Apple	Ipados	< 18.7.5
Apple	Ipados	>= 26.0, < 26.3
Apple	Iphone Os	< 18.7.5
Apple	Iphone Os	>= 26.0, < 26.3
Apple	Macos	< 26.3
Apple	Visionos	< 26.3

References

https://support.apple.com/en-us/126346Release Notes, Vendor Advisory
https://support.apple.com/en-us/126347Release Notes, Vendor Advisory
https://support.apple.com/en-us/126348Release Notes, Vendor Advisory
https://support.apple.com/en-us/126353Release Notes, Vendor Advisory
https://support.apple.com/en-us/126354Release Notes, Vendor Advisory

Timeline

Published: Feb 11, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-20644?

How severe is CVE-2026-20644?

CVE-2026-20644 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2026-20644?

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-2026-20644?

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

Scan your code now

Source: NVD / NIST