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CVE-2025-71326

AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation

Published: Jun 19, 2026Updated: Jun 23, 2026 Sources: CVE List NVDCWE-428
7.8HIGH
NVD MITRE
EPSS Score
0.1%
Top 97.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

AVAST Antivirus 25.11 contains an unquoted service path vulnerability in the SecureLine service that allows local non-privileged users to execute code with elevated SYSTEM privileges. Attackers can exploit the unquoted binary path in the service configuration to inject malicious executables that execute with high-level system permissions.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-428

Affected Products

Avast
commercial·CZaka avast antivirus, avast free antivirus
AVAST AntivirusOn-premDesktop App
Security Products / endpoint-av-edr

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Persistence
View detailed technique mapping

References

https://www.exploit-db.com/exploits/52510
exploit-db.com
https://www.avast.com/
avast.com
https://www.vulncheck.com/advisories/avast-antivirus-unquoted-service-path-privilege-escalation
vulncheck.com
News mentions
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