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CVE-2024-21907

Newtonsoft Json.net insecure deserialization

7.5 HIGHPublic exploitEPSS 32.9%
  1. Published3 Jan 2024

Description

Newtonsoft.Json before version 13.0.1 is affected by a mishandling of exceptional conditions vulnerability. Crafted data that is passed to the JsonConvert.DeserializeObject method may trigger a StackOverflow exception resulting in denial of service. Depending on the usage of the library, an unauthenticated and remote attacker may be able to cause the denial of service condition.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Newtonsoft Json.net< 13.0.1

Remediation

Fixed in
Newtonsoft Json.net≥ 13.0.1

References

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Frequently asked

Is CVE-2024-21907 being actively exploited?

CVE-2024-21907 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 32.9%.

How severe is CVE-2024-21907?

CVE-2024-21907 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 32.9% probability of exploitation.

Which products are affected by CVE-2024-21907?

Affected products include Newtonsoft Json.net.

How do I fix CVE-2024-21907?

Upgrade affected software to a fixed version, for example Newtonsoft Json.net 13.0.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-21907 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.