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CVE-2016-3440

20
FAUCET Score

CVE-2016-3440 is an unspecified vulnerability in Oracle MySQL 5.7.11 and earlier, specifically impacting the Server: Optimizer component. This flaw allows remote authenticated users to cause a denial-of-service condition, leading to high availability impact. With a CVSS score of 7.7 (High), it can be exploited over the network with low attack complexity and requires low privileges. There is no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.7.11CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.7HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.19%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0319 is in the 86th percentile among its peer group of 17,823 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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-2016-3440Moderate

mysql: unspecified vulnerability in subcomponent: Server: Optimizer (CPU July 2016)

Jul 20, 2016

References

oracle.com / technetwork/security-advisory/cpujul2016-2881720.html
PatchVendor Advisory
securityfocus.com / bid/91787
Third Party AdvisoryVDB Entry
securityfocus.com / bid/91910
securitytracker.com / id/1036362