CVE-2021-1878
MEDIUM
6.5
CVSS Score
Published: September 8, 2021 at 02:46 PM UTC
Updated: June 17, 2026 at 03:32 AM UTC
1 product affected across 1 vendormacOS
Using macOS by Apple?
Get instant alerts when new vulnerabilities affect macOS - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 2%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 11.3v < 202110.14 ≤ v ≤ 10.14.510.15 ≤ v ≤ 10.15.511.0 ≤ v < 11.310.14.610.14.6 security_update_2019-00110.14.6 security_update_2019-00210.14.6 security_update_2019-00410.14.6 security_update_2019-00510.14.6 security_update_2019-00610.14.6 security_update_2019-00710.14.6 security_update_2020-00110.14.6 security_update_2020-00210.14.6 security_update_2020-00310.14.6 security_update_2020-00410.14.6 security_update_2020-00510.14.6 security_update_2020-00610.14.6 security_update_2020-00710.14.6 security_update_2021-00110.14.6 security_update_2021-00210.14.6 supplemental_update10.14.6 supplemental_update_210.15.610.15.6 supplemental_update10.15.710.15.7 security_update_202010.15.7 security_update_2020-00110.15.7 security_update_2020-00510.15.7 security_update_2020-00710.15.7 security_update_2021-001
Affected range stops below 11.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2021, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-190
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card