CVE-2025-47277: vLLM Allows Remote Code Execution via PyNcclPipe Communication Service
vllm-project · vllm
Affected: vllm-project · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 62% of scored CVEs
DescriptionCVE.org
vLLM, an inference and serving engine for large language models (LLMs), has an issue in versions 0.6.5 through 0.8.4 that ONLY impacts environments using the `PyNcclPipe` KV cache transfer integration with the V0 engine. No other configurations are affected. vLLM supports the use of the `PyNcclPipe` class to establish a peer-to-peer communication domain for data transmission between distributed nodes. The GPU-side KV-Cache transmission is implemented through the `PyNcclCommunicator` class, while CPU-side control message passing is handled via the `send_obj` and `recv_obj` methods on the CPU side. The intention was that this interface should only be exposed to a private network using the IP address specified by the `--kv-ip` CLI parameter. The vLLM documentation covers how this must be limited to a secured network. The default and intentional behavior from PyTorch is that the `TCPStore` interface listens on ALL interfaces, regardless of what IP address is provided. The IP address given was only used as a client-side address to use. vLLM was fixed to use a workaround to force the `TCPStore` instance to bind its socket to a specified private interface. As of version 0.8.5, vLLM limits the `TCPStore` socket to the private interface as configured.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- vllm-project · vllm>= 0.6.5, < 0.8.5
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- vllm-project
- Published
- May 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-47277 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-502cwe.mitre.org
- github.com/vllm-project/vllm/security/advisories/GHSA-hjq4-87xh-github.com
- github.com/vllm-project/vllm/pull/15988github.com
- github.com/vllm-project/vllm/commit/0d6e187e88874c39cda7409cf673github.com
- docs.vllm.ai/en/latest/deployment/security.htmldocs.vllm.ai