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VulnerabilityCVE-2026-103042Published 2026-09-29

CVE-2026-103042 — ModelTC LightLLM

high

As of 2026-09-29, CVE-2026-103042 is a HIGH-severity vulnerability in ModelTC LightLLM, CVSS v3.1 7.5. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-103042 as of 2026-09-29; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

CVSS v3.1
7.5/10High
EPSS
—No EPSS score yet
CISA KEV
NoNot in the KEV catalog
Tracked threats
0None linked yet
Priority
3.8/10Threadlinqs triage score
Published
CVSS v3.1 7.5 (HIGH) · CVSS v4.0 8.7 · Priority 3.8/10 · Published 2026-09-29

Last updated:

What is CVE-2026-103042?

LightLLM through 1.2.0 contains a memory exhaustion vulnerability in the NCCL control channel when started with --pd_trans_mode nccl, allowing unauthenticated attackers to exhaust KV-transfer worker memory. Attackers can call the exposed_set_value method to store unbounded key-value pairs without size limits, causing the worker process to crash and triggering node failure.

The record classifies CVE-2026-103042 under weakness class CWE-770. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 6 days ago.

Severity and exploitation probability

CVSS v3.1 base score
7.5 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0 base score
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
3.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-09-29

Is CVE-2026-103042 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

Affected products and versions

  • ModelTC: LightLLM

How to fix CVE-2026-103042

No vendor patch reference has been recorded for CVE-2026-103042 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-103042

No threat campaign in the Threadlinqs corpus currently references CVE-2026-103042, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

Sources

Enriched from CVE.org. Last verified by Threadlinqs on .

Technical analysis

Third-party advisory

Issue tracking and product pages