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CVE-2017-18264

31
FAUCET Score

CVE-2017-18264 is a critical vulnerability affecting phpMyAdmin versions 4.0 before 4.0.10.20, 4.4.x, 4.6.x, and 4.7.0 prereleases, specifically impacting Debian Linux distributions. It allows unauthorized login for users without passwords, even when the 'AllowNoPassword' setting is disabled, due to a PHP substr function bypass. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a network attack vector, low complexity, and can lead to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation, public exploit code, or KEV entry, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0.0, < 4.0.10.20CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:*:*:*:*:*:*:*:*
>= 4.4.0, <= 4.4.15.10CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:*:*:*:*:*:*:*:*
>= 4.6.0, <= 4.6.6CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:*:*:*:*:*:*:*:*
4.7.0CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:4.7.0:beta1:*:*:*:*:*:*
4.7.0CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:4.7.0:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.95%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0295 is in the 77th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: phpmyadmin/phpmyadminFixed in: 4.0.10.20
composerpatch availablevia ghsa
Product: phpmyadmin/phpmyadminFixed in: 4.7.0

Vendor Advisories (1)

composerGHSA-5868-g58j-vrj5critical

phpMyAdmin Improper Privilege Management

May 13, 2022

References

lists.debian.org / debian-lts-announce/2018/07/msg00006.html
Third Party Advisory
phpmyadmin.net / security/PMASA-2017-8
PatchVendor Advisory
securityfocus.com / bid/97211
Third Party AdvisoryVDB Entry