CVE-2026-92971CWE-617

CVE-2026-92971

High · published September 17, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
52.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00704 · 52.8th percentile
Weakness
CWE-617 · Reachable Assertion
Published
2026-09-17T18:18Z
References (7)
https://github.com/InternLM/lmdeploy · [email protected]https://github.com/InternLM/lmdeploy/blob/v0.17.0/lmdeploy/pytorch/engine/engine_loop.py#L560-L564 · [email protected]https://github.com/InternLM/lmdeploy/blob/v0.17.0/lmdeploy/pytorch/utils.py#L187-L214 · [email protected]https://github.com/InternLM/lmdeploy/blob/v0.17.0/lmdeploy/serve/openai/endpoints/completions.py#L130-L136 · [email protected]https://github.com/InternLM/lmdeploy/issues/4965 · [email protected]https://www.vulncheck.com/advisories/internlm-lmdeploy-through-0.17.0-assertion-denial-of-service · [email protected]https://github.com/InternLM/lmdeploy/issues/4965 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 19 SEP 03:55Z
    EPSS moved — → 0%
    epss
  • 17 SEP 13:43Z
    InternLM LMDeploy through 0.17.0 Assertion Denial of Service
    cvelistv5