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CVE-2025-33243VulnerabilityPublished Updated

CVE-2025-33243: NVIDIA NeMo Framework · Deserialization of Untrusted Data

Affects NVIDIA NeMo FrameworkSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
NVIDIANeMo FrameworkAffected
  • =All versions prior to 2.6.1
Fixed in–

AI-suggested

To mitigate CVE-2025-33243, organizations should immediately upgrade the NVIDIA NeMo Framework to version 2.6.1 or later where the vulnerability is fixed. Until the upgrade is possible, restrict access to systems running NeMo to trusted users only and enforce strict access controls and monitoring in distributed environments. Implement network segmentation to isolate AI infrastructure from less trusted networks and users. Employ application whitelisting and runtime protection to detect and block suspicious deserialization activities. Conduct regular audits of user privileges and remove unnecessary local access rights to minimize the risk of exploitation. Additionally, monitor logs and system behavior for anomalies indicative of exploitation attempts. Educate developers and system administrators about the risks of deserialization vulnerabilities and encourage secure coding and deployment practices. Finally, maintain up-to-date backups of AI models and data to enable recovery in case of compromise.

Description

NVIDIA NeMo Framework contains a vulnerability where an attacker could cause remote code execution in distributed environments. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disclosure, and data tampering.

References

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