What is the CVSS score of CVE-2017-17382?

CVE-2017-17382 has a CVSS 3.0 base score of 5.9 (Medium). CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 78.3%.

Is there a public PoC exploit available for CVE-2017-17382?

Yes, a public proof-of-concept exploit is available for CVE-2017-17382. Prioritise patching immediately. EPSS: 78.3%.

Netscaler Gateway Firmware CVE-2017-17382

MEDIUM

Use of a Broken or Risky Cryptographic Algorithm (CWE-327)

2017-12-13 cve@mitre.org

Information Disclosure Oracle Citrix Netscaler Gateway Firmware Application Delivery Controller Firmware

5.9

CVSS 3.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-327 OWASP Top 10:2025 A04:2025 - Cryptographic Failures ASVS 5.0 V11 - Cryptography Approved algorithm selection
Impact	CVSS score of 5.9 (MEDIUM). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 78.27%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 78.3% exploitation probability (EPSS)

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AnalysisAI

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. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and EPSS exploitation probability 78.3%.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-327. 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. Affected products include: Citrix Application Delivery Controller Firmware, Citrix Netscaler Gateway Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.9 MEDIUM

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

DescriptionCVE.org

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.

Threat Intelligence Overview

Threat Score

5.0/10

Composite threat intelligence

EPSS Score

78.3%

Top 1% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

Citrix

NVD

CVE.org

EPSS POC (1)

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC Yes

EPSS 78.3%

Patch available No

Active threat Yes

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

128

Low Medium High Critical

KEV: 0

EPSS: +78

CVSS: +30

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:o:citrix:application_delivery_controller_firmware:10.5:*:*:*:*:*:*:*

cpe:2.3:o:citrix:application_delivery_controller_firmware:11.0:*:*:*:*:*:*:*

cpe:2.3:o:citrix:application_delivery_controller_firmware:11.1:*:*:*:*:*:*:*

cpe:2.3:o:citrix:application_delivery_controller_firmware:12.0:*:*:*:*:*:*:*

cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5:*:*:*:*:*:*:*

cpe:2.3:o:citrix:netscaler_gateway_firmware:11.0:*:*:*:*:*:*:*

cpe:2.3:o:citrix:netscaler_gateway_firmware:11.1:*:*:*:*:*:*:*

cpe:2.3:o:citrix:netscaler_gateway_firmware:12.0:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY https://support.citrix.com/article/ctx230238 REF http://www.securityfocus.com/bid/102173 REF http://www.securitytracker.com/id/1039985 REF https://robotattack.org/ REF https://www.kb.cert.org/vuls/id/144389

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