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CVE-2020-25533

HIGH
7
CVSS Score
Published: January 15, 2021 at 09:55 PM UTC
Updated: June 17, 2026 at 03:06 AM UTC
1 product affected across 1 vendorMalwarebytes

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Severity
HIGH7
Exploit prediction
EPSS 0.3%

Description

An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to perform a privileged action within the Malwarebytes launch daemon. The privileged service improperly validated XPC connections by relying on the PID instead of the audit token. An attacker can construct a situation where the same PID is used for running two different programs at different times, by leveraging a race condition during crafted use of posix_spawn.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Malwarebytes· Malwarebytes
95%
v < 4.0
Affected range stops below 4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://wojciechregula.blog/post/learn-xpc-exploitation-part-2-say-no-to-the-pid/

CVSS

7HIGH[email protected]
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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