CVE-2021-1857

high-risk
Published 2021-09-08

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.

Do I need to act?

-
0.60% 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
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Apple

References (16)

Vendor Advisory https://support.apple.com/en-us/HT212317
Vendor Advisory https://support.apple.com/en-us/HT212319
Vendor Advisory https://support.apple.com/en-us/HT212321
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/HT212319
Vendor Advisory https://support.apple.com/en-us/HT212321
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 24/34 · High
Exploitability 2/34 · Minimal
Exposure 25/34 · High