lmsys sglang update_weights_from_tensor main deserialization
Published Sep 9, 2025
6.9
MEDIUMCVSS 4.0
EPSS 0.40%
Description
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.
Affected products
-
- Version 0.4.6StatusaffectedConstraints-
- Version
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
2 other sources (CVE.org, NVD) ▾
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
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1 other source (CVE.org) ▾
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
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
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
1 other source (NVD) ▾
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Sep 10, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.40% (0.00404) | 32.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.38% (0.00376) | 29.14th | v5 (v2026.06.15) |
| Sep 10, 2025 | 0.03% (0.00035) | 8.48th | v4 (v2025.03.14) |
References (6)
- https://github.com/advisories/GHSA-9w53-xr52-mwgj Advisory
- https://github.com/sgl-project/sglang/commit/49afb3d9d9deedf6dea3a6dd5c50e85e7d8bcb07
- https://nvd.nist.gov/vuln/detail/CVE-2025-10164
- https://vuldb.com/?ctiid.323203 signaturepermissions-required
- https://vuldb.com/?id.323203 vdb-entrytechnical-description
- https://vuldb.com/?submit.635919 exploitthird-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-9w53-xr52-mwgj | Advisory | |
| https://github.com/sgl-project/sglang/commit/49afb3d9d9deedf6dea3a6dd5c50e85e7d8bcb07 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2025-10164 | ||
| https://vuldb.com/?ctiid.323203 | signaturepermissions-required | |
| https://vuldb.com/?id.323203 | vdb-entrytechnical-description | |
| https://vuldb.com/?submit.635919 | exploitthird-party-advisory |
Change history (0)
No recorded changes yet.