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CVE-2025-71326

AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation

Published: Jun 19, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-428
NVD MITRE
7.8CVSSHIGH
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix 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.

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 AntivirusAvast
On-prem
Security Products / endpoint-av-edr
avastcommercialCZSecurity Productsaka avast antivirus, avast free antivirus

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

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

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

Timeline

Published
Jun 19, 2026
Last Updated
Jun 22, 2026

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