CVE-2022-4291

10.0 criticalEPSS 0.4%

Critical (10.0) in avast script shield. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

10.0 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-119
Published: 2022-12-08
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

avast:script_shield

References

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

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