Code injection vulnerability in Trend Micro Maximum Security 11.0 (and earlier), Internet Security 11.0 (and earlier), and Antivirus+ Security 11.0 (and earlier) allows a local attacker to bypass a self-protection mechanism, inject arbitrary code, and take full control of any Trend Micro process via a "DoubleAgent" attack. One perspective on this issue is that (1) these products do not use the Protected Processes feature, and therefore an attacker can enter an arbitrary Application Verifier Provider DLL under Image File Execution Options in the registry; (2) the self-protection mechanism is intended to block all local processes (regardless of privileges) from modifying Image File Execution Options for these products; and (3) this mechanism can be bypassed by an attacker who temporarily renames Image File Execution Options during the attack.
Conclusion & alert: CVE-2017-5565 is rated Low Risk (36.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.12%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2025-03-30 | 0.24% | 0.12% | -0.12% |
| 2 | 2025-03-29 | 0.12% | 0.24% | +0.12% |
| 3 | 2025-03-17 | — | 0.12% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.7 | 3.0 | MEDIUM |
|
0.8 | 5.9 | [email protected] |
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| trendmicro | antivirus\+ | <= 11.1.1005 | cpe:2.3:a:trendmicro:antivirus\+:*:*:*:*:*:*:*:* |
| trendmicro | internet_security | <= 11.1.1005 | cpe:2.3:a:trendmicro:internet_security:*:*:*:*:*:*:*:* |
| trendmicro | maximum_security | <= 11.1.1005 | cpe:2.3:a:trendmicro:maximum_security:*:*:*:*:*:*:*:* |
| trendmicro | premium_security | <= 11.1.1005 | cpe:2.3:a:trendmicro:premium_security:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://cybellum.com/doubleagent-taking-full-control-antivirus/ | Third Party Advisory |
| http://cybellum.com/doubleagentzero-day-code-injection-and-persistence-technique/ | Technical Description Third Party Advisory |
| http://www.securityfocus.com/bid/97031 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1038206 | |
| https://success.trendmicro.com/solution/1116957 | Vendor Advisory |