CVE-2016-9499
An attacker may use this information to determine valid user accounts and enumerate them.
Does this matter?
Lower severity and a low EPSS score (7.67%). Track it; it rarely justifies an emergency change on its own.
Description
Accellion FTP server prior to version FTA_9_12_220 only returns the username in the server response if the username is invalid. An attacker may use this information to determine valid user accounts and enumerate them.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 7.67% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-204, CWE-200
- Affected
- accellion/ftp server
- Source
- cret@cert.org
EPSS 7.7% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.kb.cert.org/vuls/id/745607Third Party Advisory, US Government Resource
- https://www.qualys.com/2016/12/06/qsa-2016-12-06/qsa-2016-12-06.pdfExploit, Third Party Advisory
- https://www.securityfocus.com/bid/96154Third Party Advisory, VDB Entry
- https://www.kb.cert.org/vuls/id/745607Third Party Advisory, US Government Resource
- https://www.qualys.com/2016/12/06/qsa-2016-12-06/qsa-2016-12-06.pdfExploit, Third Party Advisory
- https://www.securityfocus.com/bid/96154Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.