What’s Vulnerable › Vulnerabilities

CVE-2018-16525

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-12-06 · updated 2026-06-17

Description

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 allow remote attackers to execute arbitrary code or leak information because of a Buffer Overflow during parsing of DNS\LLMNR packets in prvParseDNSReply.

Affected products

• Amazon Web Services Freertos: through 1.3.1
• FreeRTOS-Kernel: through 10.0.1

References

• https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-details/
• https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-put-wide-range-devices-risk-compromise-smart-homes-critical-infrastructure-systems/
• https://github.com/aws/amazon-freertos/blob/v1.3.2/CHANGELOG.md
• https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-details/
• https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-put-wide-range-devices-risk-compromise-smart-homes-critical-infrastructure-systems/
• https://github.com/aws/amazon-freertos/blob/v1.3.2/CHANGELOG.md

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