Medium severity6.5NVD Advisory· Published Sep 8, 2021· Updated Jun 17, 2026
CVE-2021-1878
CVE-2021-1878
Description
An integer overflow was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. An attacker in a privileged network position may be able to leak sensitive user information.
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Affected products
4- Range: before Security Update 2021-003
- Range: before Security Update 2021-002
- Range: before 11.3
- Range: unspecified
Patches
Vulnerability mechanics
References
3- support.apple.com/en-us/HT212325nvdVendor Advisory
- support.apple.com/en-us/HT212326nvdVendor Advisory
- support.apple.com/en-us/HT212327nvdVendor Advisory
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