How severe is CVE-2019-11230?

CVE-2019-11230 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-11230 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11230?

CVE-2019-11230 affects Avast Antivirus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11230?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-11230 published?

CVE-2019-11230 was published on 2019-07-18 and last updated on 2026-06-17.

CVE-2019-11230

CVE-2019-11230 is a medium-severity vulnerability in Avast Antivirus with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 3.6
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Avast Antivirus
Published: 2019-07-18
Last modified: 2026-06-17

Description

In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log file with a symlink. The next time the product attempts to write to the log file, the target of the symlink is renamed. This defect can be exploited to rename a critical product file (e.g., AvastSvc.exe), causing the product to fail to start on the next system restart.

Frequently asked questions

What is CVE-2019-11230?: In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log file with a symlink. The next time the product attempts to write to the log file, the target of the symlink is renamed. This defect can be exploited to rename a critical product file (e.g., AvastSvc.exe), causing the product to fail to start on the next system restart.
How severe is CVE-2019-11230?: CVE-2019-11230 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-11230 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11230?: CVE-2019-11230 affects Avast Antivirus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11230?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-11230 published?: CVE-2019-11230 was published on 2019-07-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*

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