CVE-2018-16603

Name: CVE-2018-16603
Creator: NVD / NIST
Published: 2018-12-06T23:29:01.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.81%

Last modified Jun 17, 2026

CVE-2018-16603 is a vulnerability of currently unknown severity. 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. Out of bounds access to TCP source and destination port fields in xProcessReceivedTCPPacket can leak data back to an attacker.. EPSS estimates a 1.81% chance of exploitation in the next 30 days.

Description

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. Out of bounds access to TCP source and destination port fields in xProcessReceivedTCPPacket can leak data back to an attacker.

Metrics

EPSS Probability

1.81%

75.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Amazon	Amazon Web Services Freertos	<= 1.3.1
Amazon	Freertos	<= 10.0.1

References

https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-details/Exploit, Third Party Advisory
https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-put-wide-range-devices-risk-compromise-smart-homes-critical-infrastructure-systems/Third Party Advisory
https://github.com/aws/amazon-freertos/blob/v1.3.2/CHANGELOG.mdRelease Notes, Third Party Advisory
https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-details/Exploit, Third Party Advisory
https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-put-wide-range-devices-risk-compromise-smart-homes-critical-infrastructure-systems/Third Party Advisory
https://github.com/aws/amazon-freertos/blob/v1.3.2/CHANGELOG.mdRelease Notes, Third Party Advisory

Timeline

Published: Dec 6, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-16603?

How severe is CVE-2018-16603?

Severity scoring for CVE-2018-16603 is pending analysis. The EPSS model estimates a 1.81% probability of exploitation in the next 30 days.

How do I fix CVE-2018-16603?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-16603?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST