Vulnerability in Internlm Lmdeploy
CVE-2026-92971
InternLM LMDeploy through 0.17.0 contains a reachable assertion vulnerability in the DistServe decode migration loop that allows unauthenticated attackers to terminate the inference engine. Attackers can submit a migration_request with an empty remote_block_ids list to trigger an AssertionError that crashes the engine loop and causes subsequent inference requests to fail.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (53.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/InternLM/lmdeploy/issues/4965 (issue-tracking)
- github.com/InternLM/lmdeploy/blob/v0.17.0/lmdeploy/pytorch/engine/engine_loop.py (technical-description)
- github.com/InternLM/lmdeploy/blob/v0.17.0/lmdeploy/serve/openai/endpoints/compl… (technical-description)
- github.com/InternLM/lmdeploy/blob/v0.17.0/lmdeploy/pytorch/utils.py (technical-description)
- github.com/InternLM/lmdeploy (product)
- www.vulncheck.com/advisories/internlm-lmdeploy-through-0.17.0-assertion-denial-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92971?
- CVE-2026-92971 is a high-severity vulnerability in Internlm Lmdeploy, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2026-09-17.
- How severe is CVE-2026-92971?
- High severity. CVSS v3 base score is 7.5 out of 10.