CVE-2016-6266

Exp

ccca_ajaxhandler.php in Trend Micro Smart Protection Server 2.5 before build 2200, 2.6 before build 2106, and 3.0 before build 1330 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the (1) host or (2) apikey parameter in a register action, (3) enable parameter in a save_stting action, or (4) host or (5) apikey parameter in a test_connection action.

Published: 2017-01-30 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-6266 is rated High Exploit Risk (88.1/100): CVSS High severity, with high exploitation likelihood (EPSS 8.15%, 94th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +5.14% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-6266

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-6266

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.02% 8.15% +5.14%
2 2025-03-30 6.91% 3.02% -3.89%
3 2025-03-29 — 6.91% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-6266

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
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.
 2.8 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2016-6266

Affected software / configurations for CVE-2016-6266

Vendor Product Version Raw CPE
trendmicro smart_protection_server 2.5 cpe:2.3:a:trendmicro:smart_protection_server:2.5:*:*:*:*:*:*:*
trendmicro smart_protection_server 2.6 cpe:2.3:a:trendmicro:smart_protection_server:2.6:*:*:*:*:*:*:*
trendmicro smart_protection_server 3.0 cpe:2.3:a:trendmicro:smart_protection_server:3.0:*:*:*:*:*:*:*

References for CVE-2016-6266

URL Tags
https://qkaiser.github.io/pentesting/trendmicro/2016/08/08/trendmicro-sps/ Exploit Technical Description Third Party Advisory
https://success.trendmicro.com/solution/1114913 Mitigation Patch Vendor Advisory
cvelogic Threat Intelligence