CVE-2016-9111
Incorrect access control mechanisms in Citrix Receiver Desktop Lock 4.5 allow an attacker to bypass the authentication requirement by leveraging physical access to a VDI for temporary disconnection of a LAN cable.
Does this matter?
A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 1.8%. Treat it as high on anything reachable from the internet.
Description
Incorrect access control mechanisms in Citrix Receiver Desktop Lock 4.5 allow an attacker to bypass the authentication requirement by leveraging physical access to a VDI for temporary disconnection of a LAN cable. NOTE: as of 20161208, the vendor could not reproduce the issue, stating "the researcher was unable to provide us with information that would allow us to confirm the behaviour and, despite extensive investigation on test deployments of supported products, we were unable to reproduce the behaviour as he described. The researcher has also, despite additional requests for information, ceased to respond to us."
- CVSS 3.0
- 6.8 MEDIUMCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.78% probability · 78th percentile
- Public exploits
- 1 in Exploit-DB · first 2 November 2016
- CISA KEV
- Not listed
- Weakness
- CWE-254, CWE-284
- Affected
- citrix/receiver desktop
- Source
- cve@mitre.org
EPSS 1.8% 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/94229Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037176
- https://packetstormsecurity.com/files/139493/Citrix-Receiver-Receiver-Desktop-Lock-4.5-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
- https://vuldb.com/?id.93250Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40686/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/94229Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037176
- https://packetstormsecurity.com/files/139493/Citrix-Receiver-Receiver-Desktop-Lock-4.5-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
- https://vuldb.com/?id.93250Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40686/Exploit, Third 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.