Is CVE-2016-7440 in the CISA KEV catalog?

No. CVE-2016-7440 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-7440?

CVE-2016-7440 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2016-7440?

CVE-2016-7440 has an EPSS score of 0.30% (22th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-7440?

Upgrade wolfssl on debian 11 to 3.9.10+dfsg-1 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2016-7440

MEDIUM

5.5

CVSS v3

NVD

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.

How to fix

Remediation Available

wolfsslDebian

Fixed in:3.9.10+dfsg-1CVE-2016-7440

mysql-5.5Ubuntu

Fixed in:5.5.53-0ubuntu0.14.04.1USN-3109-1

mysql-5.7Ubuntu

Fixed in:5.7.16-0ubuntu0.16.04.1USN-3109-1

mysql-server-5.5Ubuntu

Fixed in:5.5.53-0ubuntu0.14.04.1USN-3109-1

mysql-server-5.7Ubuntu

Fixed in:5.7.16-0ubuntu0.16.04.1USN-3109-1

MariaDBWindows application

Affected:10.0.0 10.0.28Fixed in:10.0.28MariaDB Corporation Ab

Affected:5.5.0 5.5.53Fixed in:5.5.53MariaDB Corporation Ab

Affected:10.1.0 10.1.19Fixed in:10.1.19MariaDB Corporation Ab

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.30%probability of exploitation in 30 days

22ndpercentile

Low risk: more likely to be exploited than 22% of all known CVEs.

References

Patch1

oracle.com

Vendor Advisory1

wolfssl.com

Third-Party Advisory4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.