CVE-2026-21387 Privilege escalation in Intel(R) LLM Library for PyTorch
An unprivileged local attacker can escalate privileges in Intel LLM Library for PyTorch via a protection mechanism failure.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21387?
CVE-2026-21387 is a medium-severity vulnerability in Intel(R) LLM Library for PyTorch, published on 11 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Protection mechanism failure for some Intel(R) LLM Library for PyTorch within Ring 3: User Applications may allow an escalation of privilege. Unprivileged software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires passive user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Weakness: CWE-693
Which versions are affected by CVE-2026-21387?
How do I fix CVE-2026-21387?
No fix has been published for CVE-2026-21387 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21387 being exploited?
There is no known exploitation of CVE-2026-21387 in the wild and no public exploit code.
Sources
Also known as GHSA-rj2q-2mfg-pp67.