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
High 8.8
Published
Updated
Check this codebase for CVE-2021-45336 and fix it if it is affected.
What it is: CVE-2021-45336 is a high-severity vulnerability in n/a, published on 27 Dec 2021.
Exploitation: There is no known exploitation of CVE-2021-45336 in the wild and no public exploit code.
Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2021-45336/ (Markdown: https://insights.sbomify.com/CVE-2021-45336/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2021-45336?
CVE-2021-45336 is a high-severity vulnerability in n/a, published on 27 Dec 2021.
Official 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.
Which versions are affected by CVE-2021-45336?
It affects 1 product.
Products include Avast Antivirus.
How do I fix CVE-2021-45336?
No fix has been published for CVE-2021-45336 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-45336 being exploited?
There is no known exploitation of CVE-2021-45336 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2025-13032 Race condition in (Free/Inernet Security/Ultimate) Antivirus
- CVE-2020-10867 Security feature bypass in n/a
- CVE-2017-8307 Missing authorization in n/a
- CVE-2025-3500 Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
- CVE-2021-45335 Missing authorization in n/a
Sources
Also known as GHSA-m6f5-297g-9hqj.