CVE-2016-7412

8.1 HIGH 9% exploit odds Fix listed Memory safety Web app

What it is

ext/mysqlnd/mysqlnd_wireprotocol.c in PHP before 5.6.26 and 7.x before 7.0.11 does not verify that a BIT field has the UNSIGNED_FLAG flag, which allows remote MySQL servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted field metadata.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 8.8% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2016-09-17 21:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:53 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 8.8% in the next 30 days (EPSS).
Severity: 8.1 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2016-09-17 21:59 UTC
Last modified: 2026-06-17 00:53 UTC
Exploit probability: 8.8% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Modified

Affected

PHP ≤ 5.6.25
PHP 7.0.0
PHP 7.0.1
PHP 7.0.2
PHP 7.0.3
PHP 7.0.4
PHP 7.0.5
PHP 7.0.6

Attack profile CVSS 3.0 · 8.1

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2016-7412.md and follow it. Check whether this project is affected by CVE-2016-7412. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record