CVE-2016-6174 [High] | Security Vulnerability in Invision Power Board

CVE-2016-6174 is rated High Exploit Risk (75.9/100): CVSS High severity, with high exploitation likelihood (EPSS 12.29%, 96th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
40084	exploit_db	edb	2016-07-11	Exploit-DB ↗
—	nvd_ref	exploit_tag		Exploit-DB ↗
—	nvd_ref	exploit_tag		Exploit-DB ↗

EDB-ID

Source

Kind

Published

Link

40084

exploit_db

edb

2016-07-11

Exploit-DB ↗

—

nvd_ref

exploit_tag

Exploit-DB ↗

—

nvd_ref

exploit_tag

Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	19.82%	12.29%	-7.54%
2	2025-12-28	23.47%	19.82%	-3.65%
3	2025-12-27	—	23.47%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

19.82%

12.29%

-7.54%

2025-12-28

23.47%

19.82%

-3.65%

2025-12-27

—

23.47%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.1	3.0	HIGH	`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.2	5.9	[email protected]
6.8	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.6	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.1

3.0

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.2

5.9

[email protected]

6.8

2.0

MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.6

6.4

[email protected]

Affected software / configurations for CVE-2016-6174

Vendor	Product	Version	Raw CPE
invisioncommunity	invision_power_board	<= 4.1.12.3	cpe:2.3:a:invisioncommunity:invision_power_board::::::::
php	php	<= 5.4.23	cpe:2.3:a:php:php::::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:::::::*
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:alpha1::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:alpha2::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:alpha3::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:alpha4::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:alpha5::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:alpha6::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:beta1::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:beta2::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:beta3::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:beta4::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:rc1::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:rc2::::::
php	php	5.5.1	cpe:2.3:a:php:php:5.5.1:::::::*
php	php	5.5.2	cpe:2.3:a:php:php:5.5.2:::::::*
php	php	5.5.3	cpe:2.3:a:php:php:5.5.3:::::::*
php	php	5.5.4	cpe:2.3:a:php:php:5.5.4:::::::*
php	php	5.5.5	cpe:2.3:a:php:php:5.5.5:::::::*
php	php	5.5.6	cpe:2.3:a:php:php:5.5.6:::::::*
php	php	5.5.7	cpe:2.3:a:php:php:5.5.7:::::::*

References for CVE-2016-6174

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

URL

CVE-2016-6174

Public exploit references (Exploit-DB) for CVE-2016-6174

Exploit prediction scoring system (EPSS) score for CVE-2016-6174

Common vulnerability scoring system (CVSS) metrics for CVE-2016-6174

Weakness enumeration for CVE-2016-6174

Affected software / configurations for CVE-2016-6174

References for CVE-2016-6174