CVEvulnerability
CVE-2026-26210
9.3 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-23
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.3 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-502
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.
Affected configurations
• kvcache-ai ktransformers (<= 0.5.3)
Related
Weakness · CWE (1)
- CWE-502 Deserialization of Untrusted Data weakness
References
- https://chocapikk.com/posts/2026/ktransformers-pickle-rce/ Exploit, Mitigation, Third Party Advisory
- https://github.com/kvcache-ai/ktransformers/pull/1944 Issue Tracking, Patch
- https://www.vulncheck.com/advisories/ktransformers-unsafe-deserialization-rce-via-balance-serve Third Party Advisory