Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before…

published 2017-12-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-8548

cvss: 5.9; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 13.9%; EPSS 13.9% chance of exploitation in 30 days, percentile 96%
public exploits: 1; Metasploit

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a ROBOT attack.

Timeline

2009-06-17 First public exploit (Metasploit auxiliary/scanner/ssl/bleichenbacher_oracle)
2017-12-13 Published

Exploit prediction

13.88% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Metasploit auxiliary/scanner/ssl/bleichenbacher_oracle Scanner for Bleichenbacher Oracle in RSA PKCS #1 v1.5 metasploit auxiliary, normal rank, 2009-06-17

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-327 Use of a Broken or Risky Cryptographic Algorithm

References

support.citrix.com /article/ctx230238
vendor-advisory
robotattack.org /
third-party-advisory
securityfocus.com /bid/102173
vdb-entry, third-party-advisory
kb.cert.org /vuls/id/144389
third-party-advisory, us-government-resource
securitytracker.com /id/1039985
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-17382
NVD CVE-2017-17382

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary