Vulnerability-Lookup

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

Vulnerability from cvelistv5 – Published: 2025-09-09 18:32 – Updated: 2025-09-10 19:43

Shadowserver KEVIntel

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

CWE-502 - Deserialization
CWE-20 - Improper Input Validation

Assigner

VulDB mitre root

References

3 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

1 product

Vendor	Product	Version	CPE status
lmsys	sglang	Affected: 0.4.6	guessed

Credits

hl4x7eq28 (VulDB User)

Shadowserver

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: a20dd26a-1170-4eab-b56f-a9176922aaf6

Vulnerability ID: CVE-2025-10164

Status: Confirmed

Status Updated: 2026-08-22 22:01 UTC

Exploited: Yes

Characteristics

Severity: 73.0

Timestamps

First Seen: 2026-08-22

Asserted: 2026-08-22

Last Seen: 2026-08-22

Scope

Asset Exposure: ['internet-facing']

Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details

1D	1
Iot	no
Feed	Shadowserver Foundation honeypot/exploited-vulnerabilities
Type	http-scan
Class	ai-system
7D Avg	0
Vendor	lmsys
30D Avg	0
90D Avg	0
Product	lmsys sglang
Cisa Kev	no
Connections	38
Observation Date	2026-08-22
Vulnerability Class	CVSS
Vulnerability Score	7.3
Vulnerability Severity	High

References

Created: 2026-08-24 01:11 UTC | Updated: 2026-08-24 01:11 UTC

KEVIntel

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: 5775be7d-1a29-41ee-bdff-b6026e93023f

Vulnerability ID: CVE-2025-10164

Status: Confirmed

Status Updated: 2026-08-22 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-08-22

Asserted: 2026-08-22

Scope

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details

Feed	KEVIntel (kevintel.com)
Title	lmsys sglang update_weights_from_tensor main deserialization
Vendor	lmsys
Product	sglang
Added Date	2026-08-22T00:00:00.000Z
Cvss Score	6.9
Epss Score	0.00404
Cvss Severity	MEDIUM
Epss Percentile	0.33952
Used In Malware	unknown
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

Created: 2026-08-23 11:00 UTC | Updated: 2026-08-23 11:00 UTC

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-10164

Vulnerability from fkie_nvd - Published: 2025-09-09 19:15 - Updated: 2026-06-17 08:27

Shadowserver KEVIntel

Severity

7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://vuldb.com/?ctiid.323203
	cna@vuldb.com	https://vuldb.com/?id.323203
	cna@vuldb.com	https://vuldb.com/?submit.635919
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://vuldb.com/?submit.635919

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
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          "product": "sglang",
          "vendor": "lmsys",
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    }
  ],
  "id": "CVE-2025-10164",
  "lastModified": "2026-06-17T08:27:48.273",
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        "acInsufInfo": false,
        "baseSeverity": "HIGH",
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          "version": "2.0"
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        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
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        "type": "Secondary",
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          "integrityImpact": "LOW",
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          "version": "3.1"
        },
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        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
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    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-10164",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-09-10T19:43:07.437880Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-09-09T19:15:45.430",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?ctiid.323203"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?id.323203"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?submit.635919"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://vuldb.com/?submit.635919"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-9W53-XR52-MWGJ

Vulnerability from github – Published: 2025-09-09 21:30 – Updated: 2025-10-29 16:00

Summary

SGLang Remote Code Execution Vulnerability via Unsafe Deserialization in update_weights_from_tensor

Details

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

5.5 (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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.5.3"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "sglang"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-10164"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-29T16:00:05Z",
    "nvd_published_at": "2025-09-09T19:15:45Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-9w53-xr52-mwgj",
  "modified": "2025-10-29T16:00:06Z",
  "published": "2025-09-09T21:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10164"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sgl-project/sglang/commit/49afb3d9d9deedf6dea3a6dd5c50e85e7d8bcb07"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sgl-project/sglang"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.323203"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.323203"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.635919"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SGLang Remote Code Execution Vulnerability via Unsafe Deserialization in update_weights_from_tensor"
}

PYSEC-2026-1919

Vulnerability from pysec - Published: 2026-07-07 16:03 - Updated: 2026-07-07 17:25

Details

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

5.5 (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

Impacted products

Name	purl
sglang	pkg:pypi/sglang

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "sglang",
        "purl": "pkg:pypi/sglang"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.10",
        "0.1.11",
        "0.1.12",
        "0.1.13",
        "0.1.14",
        "0.1.15",
        "0.1.16",
        "0.1.17",
        "0.1.18",
        "0.1.19",
        "0.1.20",
        "0.1.21",
        "0.1.22",
        "0.1.24",
        "0.1.25",
        "0.1.26",
        "0.1.3",
        "0.1.4",
        "0.1.5",
        "0.1.6",
        "0.1.7",
        "0.1.9",
        "0.2.0",
        "0.2.1",
        "0.2.10",
        "0.2.11",
        "0.2.12",
        "0.2.13",
        "0.2.14",
        "0.2.14.post1",
        "0.2.14.post2",
        "0.2.15",
        "0.2.2",
        "0.2.3",
        "0.2.4",
        "0.2.5",
        "0.2.6",
        "0.2.7",
        "0.2.8",
        "0.2.9",
        "0.2.9.post1",
        "0.3.0",
        "0.3.1",
        "0.3.1.post1",
        "0.3.1.post2",
        "0.3.1.post3",
        "0.3.2",
        "0.3.3",
        "0.3.3.post1",
        "0.3.4",
        "0.3.4.post1",
        "0.3.4.post2",
        "0.3.5",
        "0.3.5.post1",
        "0.3.5.post2",
        "0.3.6",
        "0.3.6.post1",
        "0.3.6.post2",
        "0.3.6.post3",
        "0.4.0",
        "0.4.0.post1",
        "0.4.0.post2",
        "0.4.1",
        "0.4.1.post1",
        "0.4.1.post2",
        "0.4.1.post3",
        "0.4.1.post4",
        "0.4.1.post5",
        "0.4.1.post6",
        "0.4.1.post7",
        "0.4.10",
        "0.4.10.post1",
        "0.4.10.post2",
        "0.4.2",
        "0.4.2.post1",
        "0.4.2.post2",
        "0.4.2.post3",
        "0.4.2.post4",
        "0.4.3",
        "0.4.3.post1",
        "0.4.3.post2",
        "0.4.3.post3",
        "0.4.3.post4",
        "0.4.4",
        "0.4.4.post1",
        "0.4.4.post2",
        "0.4.4.post3",
        "0.4.4.post4",
        "0.4.5",
        "0.4.5.post1",
        "0.4.5.post2",
        "0.4.5.post3",
        "0.4.6",
        "0.4.6.post1",
        "0.4.6.post2",
        "0.4.6.post3",
        "0.4.6.post4",
        "0.4.6.post5",
        "0.4.7",
        "0.4.7.post1",
        "0.4.8",
        "0.4.8.post1",
        "0.4.9",
        "0.4.9.post1",
        "0.4.9.post2",
        "0.4.9.post3",
        "0.4.9.post4",
        "0.4.9.post5",
        "0.4.9.post6",
        "0.5.0rc0",
        "0.5.0rc1",
        "0.5.0rc2",
        "0.5.1",
        "0.5.1.post1",
        "0.5.1.post2",
        "0.5.1.post3",
        "0.5.2",
        "0.5.2rc0",
        "0.5.2rc1",
        "0.5.2rc2",
        "0.5.3",
        "0.5.3.post1",
        "0.5.3.post2",
        "0.5.3.post3",
        "0.5.3rc0",
        "0.5.3rc2"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-10164",
    "GHSA-9w53-xr52-mwgj"
  ],
  "details": "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.",
  "id": "PYSEC-2026-1919",
  "modified": "2026-07-07T17:25:23.386151Z",
  "published": "2026-07-07T16:03:04.360123Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10164"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sgl-project/sglang/commit/49afb3d9d9deedf6dea3a6dd5c50e85e7d8bcb07"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sgl-project/sglang"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.323203"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.323203"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.635919"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/sglang"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-9w53-xr52-mwgj"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SGLang Remote Code Execution Vulnerability via Unsafe Deserialization in update_weights_from_tensor"
}

Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

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

Shadowserver

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Characteristics

Timestamps

Scope

Evidence

Honeypot In The Wild Attempts Confidence: 70% Source: shadowserver

Details

References

KEVIntel

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: kevintel

Details

References

FKIE_CVE-2025-10164

GHSA-9W53-XR52-MWGJ

PYSEC-2026-1919

Tags

Sightings

Nomenclature