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CVE-2024-5803

Local privelage escalation via COM hijacking

HIGH
7.5
CVSS Score
Published: October 3, 2024 at 02:20 PM UTC
Updated: June 17, 2026 at 08:16 AM UTC
3 products affected across 2 vendorsAntivirusAvg Anti VirusAntivirus

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Severity
HIGH7.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

The AVGUI.exe of AVG/Avast Antivirus before versions before 24.1 can allow a local attacker to escalate privileges via an COM hijack in a time-of-check to time-of-use (TOCTOU) when self protection is disabled.

Affected

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

Antivirus· Avg
60%
v < 24.1
Affected range stops below 24.1, so it looks safe — our inference, not a vendor statement
Antivirus· Avg Avast
60%
v < 24.1
Affected range stops below 24.1, so it looks safe — our inference, not a vendor statement
Avg Anti Virus· Avg
60%
v < 24.1
Affected range stops below 24.1, 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: [email protected]
https://support.norton.com/sp/static/external/tools/security-advisories.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.5HIGHNLOK
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-367

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