TI-2018-11893 Aliases CVE-2018-16598 GHSA-6p89-hhx8-39mh

An issue was discovered in Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up…

LOW 30CWE-441Published 2018-12-06 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

An issue was discovered in Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with FreeRTOS+TCP), and WITTENSTEIN WHIS Connect middleware TCP/IP component. In xProcessReceivedUDPPacket and prvParseDNSReply, any received DNS response is accepted, without confirming it matches a sent DNS request.

Why it matters now

EPSS 0.01518 74th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:amazon:amazon_web_services_freertos::::::::	up to 1.3.1	Vulnerable	AWS
cpe:2.3:a:amazon:freertos::::::::	up to 10.0.1	Vulnerable	AWS

cpe:2.3:a:amazon:amazon_web_services_freertos:*:*:*:*:*:*:*:* Versions up to 1.3.1 Vulnerable ·AWS
cpe:2.3:a:amazon:freertos:*:*:*:*:*:*:*:* Versions up to 10.0.1 Vulnerable ·AWS

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-16598
2026-10-03 Alias added: GHSA-6p89-hhx8-39mh

References

Patch 1

https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-details/

Advisory 2

TI-2018-11856 Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with… CVSS 3.0HIGH 8.1
TI-2018-11855 Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with… CVSS 3.0HIGH 8.1
TI-2018-11896 An issue was discovered in Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up… CVSS 3.0HIGH 8.1
TI-2018-11858 Amazon Web Services (AWS) FreeRTOS through 1.3.1 allows remote attackers to execute… CVSS 3.0HIGH 8.1
TI-2018-11852 Amazon Web Services (AWS) FreeRTOS through 1.3.1 has an uninitialized pointer free in SOCKETS_SetSockOpt. CVSS 3.0HIGH 8.1
TI-2018-11853 Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with… CVSS 3.0HIGH 7.4

See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences