How severe is CVE-2025-33247?

CVE-2025-33247 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-2025-33247 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-33247?

CVE-2025-33247 affects Nvidia Megatron-lm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-33247?

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-2025-33247 have an EU (EUVD) identifier?

Yes. CVE-2025-33247 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208974.

When was CVE-2025-33247 published?

CVE-2025-33247 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2025-33247

CVE-2025-33247 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% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208974
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 quantization configuration loading, which could allow remote code execution. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disclosure, and data tampering.

Frequently asked questions

What is CVE-2025-33247?: NVIDIA Megatron LM contains a vulnerability in quantization configuration loading, which could allow remote code execution. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disclosure, and data tampering.
How severe is CVE-2025-33247?: CVE-2025-33247 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-2025-33247 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-33247?: CVE-2025-33247 affects Nvidia Megatron-lm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-33247?: 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-2025-33247 have an EU (EUVD) identifier?: Yes. CVE-2025-33247 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208974.
When was CVE-2025-33247 published?: CVE-2025-33247 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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