CVE-2016-6606
No exploitation reported by the sources we read.
- Published2016-12-11
- WeaknessCWE-200 · CWE-310
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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 cookie encryption in phpMyAdmin. The decryption of the username/password is vulnerable to a padding oracle attack. This can allow an attacker who has access to a user's browser cookie file to decrypt the username and password. Furthermore, the same initialization vector (IV) is used to hash the username and password stored in the phpMyAdmin cookie. If a user has the same password as their username, an attacker who examines the browser cookie can see that they are the same - but the attacker can not directly decode these values from the cookie as it is still hashed. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.
Timeline
dates in UTC- 2016-12-1102:59CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-6606?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-6606?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.4 | = 4.4.0 | no fix published | NVD |
| 4.4 | = 4.4.1 | no fix published | NVD |
| 4.4 | = 4.4.1.1 | no fix published | NVD |
| 4.4 | = 4.4.2 | no fix published | NVD |
| 4.4 | = 4.4.3 | no fix published | NVD |
| 4.4 | = 4.4.4 | no fix published | NVD |
| 4.4 | = 4.4.5 | no fix published | NVD |
| 4.4 | = 4.4.6 | no fix published | NVD |
| 4.4 | = 4.4.6.1 | no fix published | NVD |
| 4.4 | = 4.4.7 | no fix published | NVD |
| 4.4 | = 4.4.8 | no fix published | NVD |
| 4.4 | = 4.4.9 | 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 ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.08.1read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- NVDweakness (CWE)CWE-200, CWE-310read 2026-10-23
- FIRST EPSSEPSS score1.4 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:H/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-2016-6606?
Is CVE-2016-6606 actively exploited?
What is the CVSS score for CVE-2016-6606?
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