What is CVE-2022-4291?

CVE-2022-4291 is a potentially exploitable heap corruption vulnerability in the aswjsflt.dll library from Avast Antivirus for Windows.

How does CVE-2022-4291 affect Avast Antivirus for Windows?

CVE-2022-4291 allows an attacker to bypass the sandbox of the application loaded with Avast Antivirus if applicable.

What is the severity of CVE-2022-4291?

CVE-2022-4291 has a severity rating of critical.

How can I fix CVE-2022-4291?

To fix CVE-2022-4291, update Avast Antivirus to version 18.0.1478 of the Script Shield Component.

Is there any more information available about CVE-2022-4291?

Yes, you can find more information about CVE-2022-4291 at the following reference: [https://support.norton.com/sp/static/external/tools/security-advisories.html](https://support.norton.com/sp/static/external/tools/security-advisories.html)

Vulnerability/
CVE-2022-4291

critical

CWE

787 119

7/12/2022

21/11/2024

CVE-2022-4291: Aswjsflt.dll in Avast Antivirus windows caused a crash of the Mozilla Firefox browser due to heap corruption

First published: Wed Dec 07 2022(Updated: )

The aswjsflt.dll library from Avast Antivirus windows contained a potentially exploitable heap corruption vulnerability that could enable an attacker to bypass the sandbox of the application it was loaded into, if applicable. This issue was fixed in version 18.0.1478 of the Script Shield Component.

Credit: security@nortonlifelock.com security@nortonlifelock.com

Affected Software	Affected Version	How to fix
Avast Script Shield	<=18.0.1473.0
	<=18.0.1473.0

Never miss a vulnerability like this again

Reference Links

https://support.norton.com/sp/static/external/tools/security-advisories.html

Frequently Asked Questions

What is CVE-2022-4291?
CVE-2022-4291 is a potentially exploitable heap corruption vulnerability in the aswjsflt.dll library from Avast Antivirus for Windows.
How does CVE-2022-4291 affect Avast Antivirus for Windows?
CVE-2022-4291 allows an attacker to bypass the sandbox of the application loaded with Avast Antivirus if applicable.
What is the severity of CVE-2022-4291?
CVE-2022-4291 has a severity rating of critical.
How can I fix CVE-2022-4291?
To fix CVE-2022-4291, update Avast Antivirus to version 18.0.1478 of the Script Shield Component.
Is there any more information available about CVE-2022-4291?
Yes, you can find more information about CVE-2022-4291 at the following reference: [https://support.norton.com/sp/static/external/tools/security-advisories.html](https://support.norton.com/sp/static/external/tools/security-advisories.html)

collector/nvd-index
agent/type
collector/mitre-cve
source/MITRE
agent/references
agent/title
agent/severity
agent/weakness
agent/first-publish-date
agent/description
collector/nvd-api
source/NVD
agent/software-canonical-lookup
agent/author
agent/tags
agent/softwarecombine
agent/event
agent/last-modified-date
vendor/avast
canonical/avast script shield
version/avast script shield/18.0.1473.0

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.