CVE-2021-1805

moderate-risk

Published 2021-04-02

An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, macOS Mojave 10.14.6 Security Update 2021-002. An application may be able to execute arbitrary code with kernel privileges.

Do I need to act?

0.26% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.8/10 High

LOCAL / LOW complexity

Affected Products (19)

Mac Os X

Macos

Affected Vendors

Apple

References (6)

Mailing List http://seclists.org/fulldisclosure/2021/Apr/54

Vendor Advisory https://support.apple.com/en-us/HT212177

Vendor Advisory https://support.apple.com/kb/HT212327

Mailing List http://seclists.org/fulldisclosure/2021/Apr/54

Vendor Advisory https://support.apple.com/en-us/HT212177

Vendor Advisory https://support.apple.com/kb/HT212327

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 1/34 · Minimal

Exposure 19/34 · Moderate