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CVE-2021-45336

HIGHCVSS 8.8/10EPSS 0.46%

Last modified

CVE-2021-45336 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Privilege escalation vulnerability in the Sandbox component of Avast Antivirus prior to 20.4 allows a local sandboxed code to gain elevated privileges by using system IPC interfaces which could lead to exit the sandbox and acquire SYSTEM privileges.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

Privilege escalation vulnerability in the Sandbox component of Avast Antivirus prior to 20.4 allows a local sandboxed code to gain elevated privileges by using system IPC interfaces which could lead to exit the sandbox and acquire SYSTEM privileges.

Metrics

CVSS 3.1
8.8/10

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

EPSS Probability
0.46%

36.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
AvastAntivirus< 20.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-45336?
Privilege escalation vulnerability in the Sandbox component of Avast Antivirus prior to 20.4 allows a local sandboxed code to gain elevated privileges by using system IPC interfaces which could lead to exit the sandbox and acquire SYSTEM privileges.
How severe is CVE-2021-45336?
CVE-2021-45336 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45336?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-45336?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST