Is CVE-2024-21907 in the CISA KEV catalog?

No. CVE-2024-21907 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-21907?

CVE-2024-21907 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2024-21907?

CVE-2024-21907 has an EPSS score of 32.91% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-21907?

Install KB5065226 for Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR). Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2024-21907

HIGHEPSS 98th pctl

7.5

CVSS v3

NVD

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.

CWE-755

How to fix

Remediation Available

Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR)Microsoft

Install:KB5065226Microsoft

Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature PackMicrosoft

Install:KB5065227Microsoft

Microsoft SQL Server 2017 for x64-based Systems (CU 31)Microsoft

Install:KB5065225Microsoft

Microsoft SQL Server 2017 for x64-based Systems (GDR)Microsoft

Install:KB5065224Microsoft

Microsoft SQL Server 2019 for x64-based Systems (CU 32)Microsoft

Install:KB5065222Microsoft

Microsoft SQL Server 2019 for x64-based Systems (GDR)Microsoft

Install:KB5065223Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

32.91%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Patch2

Exploit4

Third-Party Advisory2

Related Vulnerabilities

Other CWE-755 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-5638	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-7247	Critical	9.8	99%	KEV	Fix
CVE-2023-36933	High	7.5	72%	-	Fix
CVE-2018-0934	High	7.5	66%	-	Fix
CVE-2019-14287	High	8.8	64%	-	Fix
CVE-2019-12815	Critical	9.8	58%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-14.