No exploitation reportedFix available

CVE-2016-9865

No exploitation reported by the sources we read.

Published2016-12-11
WeaknessCWE-254 · CWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in phpMyAdmin. Due to a bug in serialized string parsing, it was possible to bypass the protection offered by PMA_safeUnserialize() function. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.

Timeline

dates in UTC

2016-12-1103:00CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-9865?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-9865?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Phpmyadmin

Branch	Affected	Fixed in	Source
4.0	= 4.0.0	no fix published	NVD
4.0	= 4.0.1	no fix published	NVD
4.0	= 4.0.2	no fix published	NVD
4.0	= 4.0.3	no fix published	NVD
4.0	= 4.0.4	no fix published	NVD
4.0	= 4.0.4.1	no fix published	NVD
4.0	= 4.0.4.2	no fix published	NVD
4.0	= 4.0.5	no fix published	NVD
4.0	= 4.0.6	no fix published	NVD
4.0	= 4.0.7	no fix published	NVD
4.0	= 4.0.8	no fix published	NVD
4.0	= 4.0.9	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

www.phpmyadmin.netPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.09.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
NVDweakness (CWE)CWE-254, CWE-502read 2026-10-23
FIRST EPSSEPSS score2.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2016-12-11
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-9865?

Is CVE-2016-9865 actively exploited?

Active exploitation of CVE-2016-9865 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-9865?

CVE-2016-9865 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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