← Vulnerability feed

Vulnerability record · CVE-2024-38373 · published 24 June 2024

CVE-2024-38373: Amazon freertos-plus-tcp out-of-bounds read vulnerability

Amazon · Freertos Plus Tcp

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.

8.1 CVSS 3.1 High EPSS 0.62% · top 52.7% CWE-126 · CWE-126CWE-125 · Out-of-bounds read
8.1CVSS 3.1 base score
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1 Release Notes
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv Vendor Advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1 Release Notes
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv Vendor Advisory

Track CVE-2024-38373 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.2CVE-2026-7424Amazon freertos-plus-tcp vulnerabilityInteger underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the devic…EPSS 0.37%7.1CVE-2026-7422Amazon freertos-plus-tcp authentication bypass by spoofing vulnerabilityInsufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size…EPSS 0.29%6.1CVE-2026-7426Amazon freertos-plus-tcp out-of-bounds write vulnerabilityInsufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an ad…EPSS 0.40%6.0CVE-2026-7425Amazon freertos-plus-tcp out-of-bounds read vulnerabilityInsufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent networ…EPSS 0.38%6.0CVE-2026-7423Amazon freertos-plus-tcp vulnerabilityInteger underflow in the ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network user to cause a…EPSS 0.36%5.3CVE-2025-11616Amazon freertos-plus-tcp vulnerabilityA missing validation check in FreeRTOS-Plus-TCP's ICMPv6 packet processing code can lead to an out-of-bounds read when receiving ICMPv6 packets of ce…EPSS 0.31%5.3CVE-2025-11617Amazon freertos-plus-tcp vulnerabilityA missing validation check in FreeRTOS-Plus-TCP's IPv6 packet processing code can lead to an out-of-bounds read when receiving a IPv6 packet with inc…EPSS 0.31%5.3CVE-2025-11618Amazon freertos-plus-tcp null pointer dereference vulnerabilityA missing validation check in FreeRTOS-Plus-TCP's UDP/IPv6 packet processing code can lead to an invalid pointer dereference when receiving a UDP/IPv…EPSS 0.34%

Source: NIST National Vulnerability Database (record CVE-2024-38373), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.