Avast Antivirus 25.11 SecureLine Service unquoted search path

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k3.17

Summaryinfo

A vulnerability classified as problematic has been found in Avast Antivirus 25.11. Impacted is an unknown function of the component SecureLine Service. Performing a manipulation results in unquoted search path. This vulnerability is cataloged as CVE-2025-71326. The attack must be initiated from a local position. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Avast Antivirus 25.11. It has been classified as critical. This affects some unknown processing of the component SecureLine Service. The manipulation with an unknown input leads to a unquoted search path vulnerability. CWE is classifying the issue as CWE-428. The product uses a search path that contains an unquoted element, in which the element contains whitespace or other separators. This can cause the product to access resources in a parent path. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared by Milad Karimi as 52510. It is possible to read the advisory at exploit-db.com. This vulnerability is uniquely identified as CVE-2025-71326 since 06/08/2026. The exploitability is told to be difficult. Attacking locally is a requirement. Technical details are unknown but a public exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/19/2026). The attack technique deployed by this issue is T1574.009 according to MITRE ATT&CK.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (52510) and EUVD (EUVD-2025-210288). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.0
VulDB Temp Score: 6.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Unquoted search path
CWE: CWE-428 / CWE-426
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/08/2026 CVE reserved
06/19/2026 +11 days Advisory disclosed
06/19/2026 +0 days VulDB entry created
06/19/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 52510
Researcher: Milad Karimi
Status: Not defined

CVE: CVE-2025-71326 (🔒)
GCVE (CVE): GCVE-0-2025-71326
GCVE (VulDB): GCVE-100-372399
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/19/2026 18:13
Updated: 06/19/2026 19:05
Changes: 06/19/2026 18:13 (81), 06/19/2026 19:05 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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