CVE-2018-16528

Amazon Web Services (AWS) FreeRTOS through 1.3.1 allows remote attackers to execute arbitrary...

8.1 High

Amazon Web Services (AWS) FreeRTOS through 1.3.1 allows remote attackers to execute arbitrary code because of mbedTLS context object corruption in prvSetupConnection and GGD_SecureConnect_Connect in AWS TLS connectivity modules.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

3.29%Up 1.4 points since Apr 14, 2021

What each source reports

NVD Score used 8.1

Record: CVE-2018-16528
CVSS 3.0: 8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-16528
Updated: 2026-11-02

EUVDEUVD-2018-8337 No score

Record: EUVD-2018-8337
Updated: 2026-11-03

GitHub AdvisoriesGHSA-x364-mjf7-297c 8.1

Amazon Web Services (AWS) FreeRTOS through 1.3.1 allows remote attackers to execute arbitrary...

Record: GHSA-x364-mjf7-297c
CVSS 3.0: 8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSV 8.1

Record: CVE-2018-16528
CVSS 3.0: 8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

amazon web services freertos

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-16528 is a high vulnerability (CVSS 8.1) in Amazon Web Services Freertos, published December 6, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.29%, the 88th percentile. No source names a fixed version.