Gen Digital Avast Antivirus up to 26.6 Sandbox privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k1.67

Summaryinfo

A vulnerability labeled as very critical has been found in Gen Digital Avast Antivirus, Avast One, Avast Premium Security, Avast Ultimate, AVG Antivirus Free, AVG Internet Security, AVG Ultimate, Norton 360 Advanced, Norton 360 Deluxe, Norton 360 Standard and Norton Antivirus Plus up to 26.6. Impacted is an unknown function of the component Sandbox. Such manipulation leads to privileges management. This vulnerability is listed as CVE-2026-80301. The attack must be carried out locally. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Gen Digital Avast Antivirus, Avast One, Avast Premium Security, Avast Ultimate, AVG Antivirus Free, AVG Internet Security, AVG Ultimate, Norton 360 Advanced, Norton 360 Deluxe, Norton 360 Standard and Norton Antivirus Plus up to 26.6. It has been rated as very critical. Affected by this issue is an unknown part of the component Sandbox. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Improper isolation in the Avast sandbox on Windows allows a local, low-privileged attacker executing inside the sandbox to access COM interfaces to the Task Scheduler service, escape containment, and execute code with elevated privileges outside the sandbox. The sandbox virtualizes file system and registry access but does not adequately restrict COM interface access to Task Scheduler. A process inside the sandbox can instantiate COM objects bound to Task Scheduler functionality and invoke methods to schedule and execute tasks on the host system. The Task Scheduler COM pathway is not blocked by the sandbox policy, allowing arbitrary code execution in the host security context. This escape vector bypasses the sandbox's intended process and file isolation boundaries and can be chained with other host-level privilege escalation techniques.

The advisory is shared for download at gendigital.com. This vulnerability is handled as CVE-2026-80301 since 08/26/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/06/2026). The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 26.7 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Avast Antivirus/Avast One/Avast Premium Security/Avast Ultimate/AVG Antivirus Free/AVG Internet Security/AVG Ultimate/Norton 360 Advanced/Norton 360 Deluxe/Norton 360 Standard/Norton Antivirus Plus 26.7

Timelineinfo

08/26/2026 CVE reserved
11/06/2026 +72 days Advisory disclosed
11/06/2026 +0 days VulDB entry created
11/06/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gendigital.com
Status: Confirmed

CNA: GEN
CVE: CVE-2026-80301 (🔒)

GCVE (CVE): GCVE-0-2026-80301
GCVE (VulDB): GCVE-100-432008

Entryinfo

Created: 11/06/2026 17:37
Changes: 11/06/2026 17:37 (55)
Complete: 🔍
Cache ID: 216::103

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