CVE-2024-9524

SYSTEM code execution via symbolic-link file creation

Published May 9, 2025 · Updated May 9, 2025

Link-following in Avira Prime 1.1.96.2 allows local users to execute arbitrary code as SYSTEM through the System Speedup Service. The service follows an attacker-controlled symbolic link during a time-of-check to time-of-use window and creates a file at the substituted target. Exploitation requires prior low-privileged code execution on a Windows 10 x64 host and yields full SYSTEM-context execution.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Link-following in Avira Prime 1.1.96.2 allows local users to execute arbitrary code as SYSTEM through the System Speedup Service. The service follows an attacker-controlled symbolic link during a time-of-check to time-of-use window and creates a file at the substituted target. Exploitation requires prior low-privileged code execution on a Windows 10 x64 host and yields full SYSTEM-context execution.

The record

CVE
CVE-2024-9524
Published
May 9, 2025
Updated
May 9, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-59, CAPEC-549, CAPEC-233, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NortonLifeLock Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')
CAPEC-549Local Execution of Code
CAPEC-233Privilege Escalation
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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