CVE-2026-26210CRITICAL 9.8EPSS p48.4%

CVE-2026-26210CVE-2026-26210

Description

KTransformers through 0.5.3 contains an unsafe deserialization vulnerability in the balance_serve backend mode where the scheduler RPC server binds a ZMQ ROUTER socket to all interfaces with no authentication and deserializes incoming messages using pickle.loads() without validation. Attackers can send a crafted pickle payload to the exposed ZMQ socket to execute arbitrary code on the server with the privileges of the ktransformers process.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.70% probability of exploitation · percentile 48.4% · 2026-06-19T12:03:05Z
Published2026-04-23
Last modified2026-05-05

Underlying weaknesses· 1

CWE-502

References

  1. https://chocapikk.com/posts/2026/ktransformers-pickle-rce/
  2. https://github.com/kvcache-ai/ktransformers/pull/1944
  3. https://www.vulncheck.com/advisories/ktransformers-unsafe-deserialization-rce-via-balance-serve

1

TypeTargetConfidenceTier
WeaknessDeserialization of Untrusted Datacwe-5020%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.