CVE-2026-24150
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedNVIDIA Megatron-LM contains a vulnerability in checkpoint loading where an Attacker may cause an RCE by convincing a user to load a maliciously crafted file. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, and data tampering.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceNVIDIA Megatron-LM contains a vulnerability in its checkpoint loading mechanism where a maliciously crafted checkpoint file can trigger remote code execution (RCE). The vulnerability stems from unsafe deserialization or insufficient validation of checkpoint data during the loading process, allowing an attacker who convinces a user to load a crafted file to execute arbitrary code with the privileges of the user loading the checkpoint.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 0.15.3CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Megatron-LM versionRun 'pip show megatron-lm' or check the installed package version in your environmentAffected if The installed version is lower than 0.15.3 (e.g., 0.15.0, 0.14.0, etc.)
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Locate checkpoint loading codeSearch for imports or usage of checkpoint loading functions such as 'load_checkpoint', 'from_pretrained', or serialization utilities in your training scriptsAffected if Your code loads checkpoint files using Megatron-LM's checkpoint loading mechanism
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Determine checkpoint sourceInspect your checkpoint loading configuration or scripts to identify the source (local path, remote URL, shared storage)Affected if Checkpoints are loaded from untrusted or unverified sources such as external URLs, third-party repositories, or shared drives without integrity verification
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Check for checkpoint validationReview whether your loading pipeline includes integrity verification (e.g., cryptographic signature verification, checksum validation) before the checkpoint is deserializedAffected if No integrity verification is performed before loading checkpoint files, meaning malicious files could be loaded without detection
You are affected if you are running any Megatron-LM version below 0.15.3 and your environment loads checkpoint files from external or untrusted sources without validation.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped0.15.3
Do not load checkpoint files from untrusted or unverified sources. Wait for NVIDIA's official security patch and apply it promptly. Consider implementing checkpoint file integrity verification (e.g., cryptographic signatures) before loading.
Megatron LM 0.15.3
- Upgrade Megatron LM to version 0.15.3 or later using pip: pip install megatron-lm>=0.15.3
- Verify the installed version with: pip show megatron-lm
- After upgrading, ensure any checkpoint loading operations use only trusted checkpoint files
- Avoid loading checkpoint files from untrusted or unknown sources until the upgrade is complete
- Review any automated scripts or pipelines that load checkpoints to ensure they use trusted sources
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-24150 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-24150 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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