How severe is CVE-2017-11393?

CVE-2017-11393 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-11393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11393?

CVE-2017-11393 primarily affects Trendmicro Officescan. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11393?

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

When was CVE-2017-11393 published?

CVE-2017-11393 was published on 2017-08-03 and last updated on 2026-06-17.

CVE-2017-11393

CVE-2017-11393 is a critical-severity vulnerability in Trendmicro Officescan with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Trendmicro Officescan
Published: 2017-08-03
Last modified: 2026-06-17

Description

Proxy command injection vulnerability in Trend Micro OfficeScan 11 and XG (12) allows remote attackers to execute arbitrary code on vulnerable installations. The specific flaw can be exploited by parsing the tr parameter within Proxy.php. Formerly ZDI-CAN-4543.

Frequently asked questions

What is CVE-2017-11393?: Proxy command injection vulnerability in Trend Micro OfficeScan 11 and XG (12) allows remote attackers to execute arbitrary code on vulnerable installations. The specific flaw can be exploited by parsing the tr parameter within Proxy.php. Formerly ZDI-CAN-4543.
How severe is CVE-2017-11393?: CVE-2017-11393 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-11393 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11393?: CVE-2017-11393 primarily affects Trendmicro Officescan. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-11393?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-11393 published?: CVE-2017-11393 was published on 2017-08-03 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:trendmicro:officescan:11.0:sp1:*:*:*:*:*:*
cpe:2.3:a:trendmicro:officescan:12.0:*:*:*:*:*:*:*

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