CVE-2024-38373

highpriority · track · 32EPSS 0.006 · 49 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.61% (49th) EPSS

CVSS 8.1 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-28

FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 contain a buffer over-read issue in the DNS Response Parser when parsing domain names in a DNS response. A carefully crafted DNS response with domain name length value greater than the actual domain name length, could cause the parser to read beyond the DNS response buffer. This issue affects applications using DNS functionality of the FreeRTOS-Plus-TCP stack. Applications that do not use DNS functionality are not affected, even when the DNS functionality is enabled. This vulnerability has been patched in version 4.1.1.

cvss

Technical severity, 0–10. One row per scoring source.

9.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.4–9.6

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.2

v3.19.6criticalAV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Hsecondary · ENISA EU

v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Hsecondary · security-advisories@github.comexploitability 3.1 · impact 5.8

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-125USCWE-126USCWE-126US

affected products (4)

Products and version ranges known to be affected.

FreeRTOS FreeRTOS-Plus-TCP≤ 4.0.0, ≤ 4.1.0enisa_euvdEU
Amazon Web Services, Inc. FreeRTOSall versionsfstec_bduRU
Amazon Web Services, Inc. FreeRTOS Plus TCP4.0.0 → 4.1.1fstec_bduRU
amazon freertos-plus-tcp4.0.0 → 4.1.1nvdUScpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2024-06-24modified 2026-06-17

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+11877 more

references (8)

External citations — patches, advisories, analysis.

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