How severe is CVE-2016-6174?

CVE-2016-6174 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-6174 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6174?

CVE-2016-6174 primarily affects Invisioncommunity Invision Power Board. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6174?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-6174 published?

CVE-2016-6174 was published on 2016-07-12 and last updated on 2026-06-17.

CVE-2016-6174

CVE-2016-6174 is a high-severity vulnerability in Invisioncommunity Invision Power Board with a CVSS 3.x base score of 8.1. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Invisioncommunity Invision Power Board
Published: 2016-07-12
Last modified: 2026-06-17

Description

applications/core/modules/front/system/content.php in Invision Power Services IPS Community Suite (aka Invision Power Board, IPB, or Power Board) before 4.1.13, when used with PHP before 5.4.24 or 5.5.x before 5.5.8, allows remote attackers to execute arbitrary code via the content_class parameter.

Frequently asked questions

What is CVE-2016-6174?: applications/core/modules/front/system/content.php in Invision Power Services IPS Community Suite (aka Invision Power Board, IPB, or Power Board) before 4.1.13, when used with PHP before 5.4.24 or 5.5.x before 5.5.8, allows remote attackers to execute arbitrary code via the content_class parameter.
How severe is CVE-2016-6174?: CVE-2016-6174 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-6174 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6174?: CVE-2016-6174 primarily affects Invisioncommunity Invision Power Board. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6174?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-6174 published?: CVE-2016-6174 was published on 2016-07-12 and last updated on 2026-06-17.

References

Affected products (22)

cpe:2.3:a:invisioncommunity:invision_power_board:*:*:*:*:*:*:*:*
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*

More vulnerabilities in Invisioncommunity Invision Power Board

CVE-2012-5692 — Critical (CVSS 10.0): Unspecified vulnerability in admin/sources/base/core.php in Invision Power Board (aka IPB or IP.Board) 3.1.x through…
CVE-2013-3725 — Critical (CVSS 9.8): Invision Power Board (IPB) through 3.x allows admin account takeover leading to code execution.
CVE-2012-2226 — Critical (CVSS 9.8): Invision Power Board before 3.3.1 fails to sanitize user-supplied input which could allow remote attackers to obtain…
CVE-2017-8898 — Critical (CVSS 9.8): Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has stored XSS in the Announcements, allowing…
CVE-2014-4928 — High (CVSS 8.8): SQL injection vulnerability in Invision Power Board (aka IPB or IP.Board) before 3.4.6 allows remote attackers to…
CVE-2017-8899 — High (CVSS 8.1): Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has a composite of Stored XSS and Information…

All CVEs affecting Invisioncommunity Invision Power Board →

Threat intelligence

Threat-intel indicators referencing this CVE:

45.84.120.3 (ipv4-addr)
221.161.235.168 (ipv4-addr)
187.141.71.166 (ipv4-addr)
187.110.238.50 (ipv4-addr)
116.255.252.44 (ipv4-addr)
113.164.66.10 (ipv4-addr)
103.38.219.22 (ipv4-addr)
103.20.122.54 (ipv4-addr)