CVE-2021-1733 Sysinternals PsExec Elevation of Privilege Vulnerability
High 7.8
Published
Updated
Check this codebase for CVE-2021-1733 and fix it if it is affected.
What it is: CVE-2021-1733 is a high-severity vulnerability in Microsoft PsExec, published on 25 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-1733 exists.
Affected product: Microsoft PsExec. 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-2021-1733/ (Markdown: https://insights.sbomify.com/CVE-2021-1733/index.md)
An attacker can exploit a flaw in Sysinternals PsExec to elevate privileges on the target system.
- 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-2021-1733?
CVE-2021-1733 is a high-severity vulnerability in Microsoft PsExec, published on 25 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Sysinternals PsExec Elevation of Privilege Vulnerability
Weakness: CWE-269
Which versions are affected by CVE-2021-1733?
It affects 1 product.
Products include Microsoft Psexec.
How do I fix CVE-2021-1733?
No fix has been published for CVE-2021-1733 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-1733 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-1733 exists.
Other vulnerabilities in Microsoft PsExec
Sources
Also known as GHSA-w8qf-q3qr-cmvm.