CVE-2017-5933
Citrix NetScaler ADC and NetScaler Gateway 10.5 before Build 65.11, 11.0 before Build 69.12/69.123, and 11.1 before Build 51.21 randomly generates GCM nonces, which makes it marginally easier for remote attackers to obtain the GCM authentication key and…
Does this matter?
Lower severity and a low EPSS score (3.18%). Track it; it rarely justifies an emergency change on its own.
Description
Citrix NetScaler ADC and NetScaler Gateway 10.5 before Build 65.11, 11.0 before Build 69.12/69.123, and 11.1 before Build 51.21 randomly generates GCM nonces, which makes it marginally easier for remote attackers to obtain the GCM authentication key and spoof data by leveraging a reused nonce in a session and a "forbidden attack," a similar issue to CVE-2016-0270.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 3.18% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- citrix/netscaler application delivery controller firmware
- Source
- cve@mitre.org
EPSS 3.2% 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.
References
- http://www.securityfocus.com/bid/96151Third Party Advisory, VDB Entry
- https://github.com/nonce-disrespect/nonce-disrespectThird Party Advisory
- https://support.citrix.com/article/CTX220329Vendor Advisory
- http://www.securityfocus.com/bid/96151Third Party Advisory, VDB Entry
- https://github.com/nonce-disrespect/nonce-disrespectThird Party Advisory
- https://support.citrix.com/article/CTX220329Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.