Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-7440

21
FAUCET Score

CVE-2016-7440 describes a cache-bank timing side-channel vulnerability in the C implementation of AES in wolfSSL versions prior to 3.9.10, which also impacts products like Debian, MariaDB, and Oracle. This local vulnerability (CVSS 5.5 Medium) allows an attacker with low privileges to potentially discover AES encryption keys by analyzing timing differences. While the impact is high for confidentiality, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.5.0, < 5.5.53CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 10.0.0, < 10.0.28CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 10.1.0, < 10.1.19CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 5.5.0, <= 5.5.52CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
>= 5.6.0, <= 5.6.33CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 79th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

oraclepatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2016-7440Moderate

yaSSL: AES key leak via cache-bank timing side channel attack

Oct 19, 2016

References

mariadb.com / kb/en/mariadb/mariadb-10028-release-notes
Third Party Advisory
wolfssl.com / wolfSSL/Blog/Entries/2016/9/26_wolfSSL_3.9.10_Vulnerability_Fixes.html
Vendor Advisory
debian.org / security/2016/dsa-3706
Third Party Advisory
oracle.com / technetwork/security-advisory/cpuoct2016-2881722.html
PatchThird Party Advisory
securityfocus.com / bid/93659
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037050
Broken LinkThird Party AdvisoryVDB Entry