CVE-2026-24243 — Nemo Megatron Bridge
HIGHCVE-2026-24243 is a high-severity (CVSS 7.8) Deserialization of Untrusted Data vulnerability in nvidia nemo megatron bridge. A fix is available — see the affected versions and patch details below.
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause deserialization of untrusted data. A successful exploit of this vulnerability might lead to code…
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-24243.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2026-24243 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 380,526 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Description
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause deserialization of untrusted data. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, and information disclosure.
Affected Products
nemo megatron bridgenvidiaDetection & mitigation playbook
Vendor / applianceDetect
Inventory every nvidia nemo megatron bridge deployment and check each version against the affected-products list above.
Fix
Apply the nvidia nemo megatron bridge security patch or hotfix for CVE-2026-24243 on the affected version, following the vendor advisory for your exact build.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
Frequently Asked Questions
Is CVE-2026-24243 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.