CVE-2021-1790

Name: CVE-2021-1790
Creator: NVD / NIST
Published: 2021-04-02T19:15:18.99+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2021-1790 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. Processing a maliciously crafted font may lead to arbitrary 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

1.00%

58.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	>= 10.15, < 10.15.7
Apple	Mac Os X	10.15.7
Apple	Macos	>= 11.0, < 11.2

References

https://support.apple.com/en-us/HT212147Vendor Advisory
https://support.apple.com/en-us/HT212147Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-1790?

How severe is CVE-2021-1790?

CVE-2021-1790 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-1790?

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-2021-1790?

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

Scan your code now

Source: NVD / NIST