CVE-2017-6339
It also allows administrators to upload their own certificates signed by a root CA.
Does this matter?
A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 4.1%. Treat it as high on anything reachable from the internet.
Description
Trend Micro InterScan Web Security Virtual Appliance (IWSVA) 6.5 before CP 1746 mismanages certain key and certificate data. Per IWSVA documentation, by default, IWSVA acts as a private Certificate Authority (CA) and dynamically generates digital certificates that are sent to client browsers to complete a secure passage for HTTPS connections. It also allows administrators to upload their own certificates signed by a root CA. An attacker with low privileges can download the current CA certificate and Private Key (either the default ones or ones uploaded by administrators) and use those to decrypt HTTPS traffic, thus compromising confidentiality. Also, the default Private Key on this appliance is encrypted with a very weak passphrase. If an appliance uses the default Certificate and Private Key provided by Trend Micro, an attacker can simply download these and decrypt the Private Key using the default/weak passphrase.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 4.07% probability · 91th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 12 January 2017
- CISA KEV
- Not listed
- Weakness
- CWE-269, CWE-521
- Affected
- trendmicro/interscan web security virtual appliance
- Source
- cve@mitre.org
EPSS 4.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/bid/97492Third Party Advisory, VDB Entry
- https://success.trendmicro.com/solution/1116960Patch, Vendor Advisory
- https://www.qualys.com/2017/01/12/qsa-2017-01-12/qsa-2017-01-12.pdfExploit, Technical Description, Third Party Advisory
- http://www.securityfocus.com/bid/97492Third Party Advisory, VDB Entry
- https://success.trendmicro.com/solution/1116960Patch, Vendor Advisory
- https://www.qualys.com/2017/01/12/qsa-2017-01-12/qsa-2017-01-12.pdfExploit, Technical Description, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.