CVE-2026-3337
5.9 · MEDIUMOverview
CVE-2026-3337 is a medium-severity vulnerability affecting amazon aws-lc-fips-sys. It was published on March 2, 2026 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis.
The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm.
Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.
Remediation
Check the references section for vendor advisories and patches from amazon. Update aws-lc-fips-sys to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| amazon | aws-lc-fips-sys | >= 0.13.0, < 0.13.12 | Affected |
| amazon | aws-lc-sys | >= 0.14.0, < 0.38.0 | Affected |
| amazon | aws_libcrypto | >= 1.21.0, < 1.69.0 | Affected |
Frequently Asked Questions
What is CVE-2026-3337?
CVE-2026-3337 is a medium-severity vulnerability affecting amazon aws-lc-fips-sys. It was published on March 2, 2026 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
How severe is CVE-2026-3337?
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-3337?
Check the references section for vendor advisories and patches from amazon. Update aws-lc-fips-sys to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-3337?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-3337 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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