Exponent CMS 2.x before 2.3.7 Patch 3 allows remote attackers to execute arbitrary code via the sc parameter to install/index.php.

published 2017-01-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3326

cvss: 9.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 6.6%; EPSS 6.6% chance of exploitation in 30 days, percentile 93%
public exploits: 0; none known

Patch / fix

links 3

Exploit prediction

6.64% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

exponentcms.org http://www.exponentcms.org/news/show/title/security-notice-closing-an-exponent-security-vulnerability referenced PoC, tagged "exploit" by a source, unverified
packetstormsecurity.com http://packetstormsecurity.com/files/135721/Exponent-2.3.7-PHP-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified
htbridge.com https://www.htbridge.com/advisory/HTB23290 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-94 Improper Control of Generation of Code

References

exponentcms.org /news/show/title/security-notice-closing-an-exponent-security-vulnerability
exploit, mitigation, patch, vendor-advisory
packetstormsecurity.com /files/135721/Exponent-2.3.7-PHP-Code-Execution.html
exploit, patch, third-party-advisory
htbridge.com /advisory/HTB23290
exploit, patch, third-party-advisory
exponentcms.org /news/patch-3-released-for-v2-3-7
release-notes, vendor-advisory
securityfocus.com /archive/1/537499/100/0/threaded
mailing-list

Sources

CVE List CVE-2016-2242
NVD CVE-2016-2242

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary