How severe is CVE-2025-33248?

CVE-2025-33248 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-33248 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-33248?

CVE-2025-33248 affects Nvidia Megatron-lm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-33248?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-33248 have an EU (EUVD) identifier?

Yes. CVE-2025-33248 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208975.

When was CVE-2025-33248 published?

CVE-2025-33248 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2025-33248

CVE-2025-33248 is a high-severity vulnerability in Nvidia Megatron-lm with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208975
Weakness: CWE-502
Affected product: Nvidia Megatron-lm
Published: 2026-03-24
Last modified: 2026-06-17

Description

NVIDIA Megatron-LM contains a vulnerability in the hybrid conversion script 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.

Frequently asked questions

What is CVE-2025-33248?: NVIDIA Megatron-LM contains a vulnerability in the hybrid conversion script 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.
How severe is CVE-2025-33248?: CVE-2025-33248 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-33248 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-33248?: CVE-2025-33248 affects Nvidia Megatron-lm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-33248?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-33248 have an EU (EUVD) identifier?: Yes. CVE-2025-33248 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208975.
When was CVE-2025-33248 published?: CVE-2025-33248 was published on 2026-03-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nvidia:megatron-lm:*:*:*:*:*:*:*:*

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