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CVE-2016-6174

42
FAUCET Score

CVE-2016-6174 is a critical code injection vulnerability affecting Invision Power Services IPS Community Suite (versions before 4.1.13) when used with specific older PHP versions (before 5.4.24 or 5.5.8). An unauthenticated remote attacker can exploit this flaw via the content_class parameter to execute arbitrary code on the vulnerable server. This vulnerability carries a CVSS v3 score of 8.1 (High), indicating a severe risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability compromise. The EPSS score of 0.198 suggests a moderate likelihood of exploitation, placing it above 95% of all CVEs. While not listed on the CISA KEV catalog, a public exploit (EDB-40084) exists, demonstrating its exploitability. Despite this, there is minimal community discussion or media coverage surrounding this CVE, which is typical for a large percentage of vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1.12.3CPE matchmatch criteria
cpe:2.3:a:invisioncommunity:invision_power_board:*:*:*:*:*:*:*:*
<= 5.4.23CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
5.5.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
5.5.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*
5.5.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
12.29%
Probability of exploitation in next 30 days
EPSS Percentile
95.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-40084 · Jul 11, 2016
This CVE's current EPSS score of 0.1229 is in the 78th percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

karmainsecurity.com / KIS-2016-11
Exploit
lists.apple.com / archives/security-announce/2016/Sep/msg00006.html
packetstormsecurity.com / files/137804/IPS-Community-Suite-4.1.12.3-PHP-Code-Injection.html
seclists.org / fulldisclosure/2016/Jul/19
Exploit
invisionpower.com / release-notes/4113-r44
support.apple.com / HT207170
exploit-db.com / exploits/40084
securityfocus.com / bid/91732