CVE-2025-10164 (GCVE-0-2025-10164)

Vulnerability from cvelistv5 – Published: 2025-09-09 18:32 – Updated: 2025-09-10 19:43
VLAI Previdian
Title
lmsys sglang update_weights_from_tensor main deserialization
Summary
A security flaw has been discovered in lmsys sglang 0.4.6. Affected by this vulnerability is the function main of the file /update_weights_from_tensor. The manipulation of the argument serialized_named_tensors results in deserialization. The attack can be launched remotely. The exploit has been released to the public and may be exploited. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-10 19:43 UTC
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.323203 vdb-entrytechnical-description
https://vuldb.com/?ctiid.323203 signaturepermissions-required
https://vuldb.com/?submit.635919 third-party-advisory
Impacted products
Vendor Product Version
lmsys sglang Affected: 0.4.6
Create a notification for this product.
Credits
hl4x7eq28 (VulDB User)
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 13cf8f1c-13f6-4ff9-b615-b065c732ef54

Vulnerability ID: CVE-2025-10164

Status: Confirmed

Status Updated: 2026-08-22 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2026-08-22
Asserted: 2026-08-22
Scope
Notes: lmsys sglang update_weights_from_tensor main deserialization | Affected: Lmsys / sglang | CVSS: 6.9 (MEDIUM) | EPSS: 0.00404 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title lmsys sglang update_weights_from_tensor main deserialization
Cve Id CVE-2025-10164
Vendor Lmsys
Ghsa Id None
Product sglang
Added Date 2026-08-22T00:00:00.000Z
Cvss Score 6.9
Epss Score 0.00404
Previous Ids
Cvss Severity MEDIUM
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.32274
Used In Malware unknown
Vulnerability Id CVE-2025-10164
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-02 09:09 CEST | Updated: 2026-10-02 09:09 CEST
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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