CVE-2021-1809

high-risk
Published 2021-09-08

A memory corruption issue was addressed with improved validation. This issue is fixed in Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. A malicious application may be able to read restricted memory.

Do I need to act?

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0.54% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Apple

References (12)

Vendor Advisory https://support.apple.com/en-us/HT212317
Vendor Advisory https://support.apple.com/en-us/HT212323
Vendor Advisory https://support.apple.com/en-us/HT212324
Vendor Advisory https://support.apple.com/en-us/HT212325
Vendor Advisory https://support.apple.com/en-us/HT212326
Vendor Advisory https://support.apple.com/en-us/HT212327
Vendor Advisory https://support.apple.com/en-us/HT212317
Vendor Advisory https://support.apple.com/en-us/HT212323
Vendor Advisory https://support.apple.com/en-us/HT212324
Vendor Advisory https://support.apple.com/en-us/HT212325
Vendor Advisory https://support.apple.com/en-us/HT212326
Vendor Advisory https://support.apple.com/en-us/HT212327
51
/ 100
high-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 23/34 · High