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CVE-2025-10905

Collision in minifilter driver of Avast Free Antivirus results in disabling of real-time protection

MEDIUM
4.4
CVSS Score
Published: November 11, 2025 at 03:52 PM UTC
Updated: October 18, 2026 at 09:10 PM UTC
1 product affected across 1 vendorFree Antivirus

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

Collision in MiniFilter driver in Avast Software Avast Free Antivirus  before 25.9  on Windows allows a local attacker with administrative privileges to disable real-time protection and self-defense mechanisms.

Affected

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

Free Antivirus· Avast
90%
0 ≤ v < 25.90
Affected range stops below 25.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.gendigital.com/us/en/contact-us/security-advisories/)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUMNLOK
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-693

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