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CVE-2016-9021

24
FAUCET Score

CVE-2016-9021 describes an improper input validation vulnerability in storeController.php of Exponent CMS prior to version 2.6.0. This critical vulnerability, with a CVSS score of 9.8, allows for unauthenticated remote exploitation with high impact to confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.0CPE matchmatch criteria
cpe:2.3:a:exponentcms:exponent_cms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.27%
Probability of exploitation in next 30 days
EPSS Percentile
66.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0127 is in the 53rd percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

exponentcms.lighthouseapp.com / projects/61783/changesets/a8efd9ca71fc9b8b843ad0910d435d237482ee31
PatchVendor Advisory
github.com / exponentcms/exponent-cms/commit/a8efd9ca71fc9b8b843ad0910d435d237482ee31
PatchThird Party Advisory