CVE-2026-12858 Local privilege escalation vulnerability in ESET AV Remover
High 8.5
Published
Updated
Check this codebase for CVE-2026-12858 and fix it if it is affected.
What it is: CVE-2026-12858 is a high-severity vulnerability in ESET AV Remover (standalone), published on 9 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-12858 in the wild and no public exploit code.
Affected product: ESET AV Remover (standalone). 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-2026-12858/ (Markdown: https://insights.sbomify.com/CVE-2026-12858/index.md)
Local attackers can escalate privileges via crafted RPC calls in ESET AV Remover, requiring a patch to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12858?
CVE-2026-12858 is a high-severity vulnerability in ESET AV Remover (standalone), published on 9 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper Privilege Management vulnerability in ESET AV Remover (standalone) allows Privilege Escalation via especially crafted RPC.
Weakness: CWE-269
Which versions are affected by CVE-2026-12858?
How do I fix CVE-2026-12858?
No fix has been published for CVE-2026-12858 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-12858 being exploited?
There is no known exploitation of CVE-2026-12858 in the wild and no public exploit code.
Sources
Also known as GHSA-22g2-j87w-f955.