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Connect Secure CVE-2019-11539

HIGH
OS Command Injection (CWE-78)
2019-04-26 cve@mitre.org
Command Injection Ivanti Connect Secure Policy Secure Pulse Policy Secure Pulsesecure
7.2
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-78
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 7.2 (HIGH). Attack characteristics: network attack vector, low complexity, high privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived

A remote attacker could execute arbitrary operating system commands on the host by sending crafted requests to the affected application.
Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.
Exploited in the wild (CISA KEV) No patch listed yet 98.6% exploitation probability (EPSS)

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AnalysisAI

In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, 8.2RX before 8.2R12.1, and 8.1RX before 8.1R15.1 and Pulse Policy Secure version 9.0RX before 9.0R3.2, 5.4RX. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, 8.2RX before 8.2R12.1, and 8.1RX before 8.1R15.1 and Pulse Policy Secure version 9.0RX before 9.0R3.2, 5.4RX before 5.4R7.1, 5.3RX before 5.3R12.1, 5.2RX before 5.2R12.1, and 5.1RX before 5.1R15.1, the admin web interface allows an authenticated attacker to inject and execute commands. Affected products include: Ivanti Connect Secure, Ivanti Policy Secure, Pulsesecure Pulse Policy Secure. Version information: version 9.0.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 7.2 HIGH
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Added to CISA KEV
Jul 14, 2026 - 04:22 CISA
CVE Published
Apr 26, 2019 - 02:29 nvd
HIGH 7.2

DescriptionNVD

In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, 8.2RX before 8.2R12.1, and 8.1RX before 8.1R15.1 and Pulse Policy Secure version 9.0RX before 9.0R3.2, 5.4RX before 5.4R7.1, 5.3RX before 5.3R12.1, 5.2RX before 5.2R12.1, and 5.1RX before 5.1R15.1, the admin web interface allows an authenticated attacker to inject and execute commands.

Threat Intelligence Overview

EPSS Score
98.6%
Top 0% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium
NVD CVE.org CISA KEV EPSS POC (1) Exploit-DB

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 HIGH
CISA KEV Yes
Public POC Yes
EPSS 98.6%
Patch available No
Active threat Yes
Deciding rule
HIGH severity + EPSS > 10%
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
Out-of-Cycle
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
High

Priority Score

220
Low Medium High Critical
KEV: +50
EPSS: +99
CVSS: +36
PoC: +20
Weaponized: +15
Threat intel: 0
Gov advisory: 0

Attack Technique

OS Command Injection CRITICAL

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Affected Products (CPE)NVD

cpe:2.3:a:ivanti:connect_secure:8.1:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r1.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r1.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r10.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r11.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r11.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r12.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r12.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r13.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r14.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r2.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r2.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r3.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r3.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r3.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r4.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r4.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r5.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r6.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.1:r7:*:*:*:*:*:*
+ 118 more

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In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4 and 8.3RX before 8.3R7.1 and Pulse Policy Secure versi

Same weakness CWE-78 – OS Command Injection

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CVE-2019-15107 CRITICAL POC
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CVE-2014-6271 CRITICAL POC
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CVE-2018-11138 CRITICAL POC
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CVE-2014-6278 HIGH POC
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Same technique Command Injection

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References

Advisories & patches
ADVISORY https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101 REF http://packetstormsecurity.com/files/154376/Pulse-Secure-8.1R15.1-8.2-8.3-9.0-SSL-VPN-Remote-Code-Execution.html REF http://packetstormsecurity.com/files/155277/Pulse-Secure-VPN-Arbitrary-Command-Execution.html REF http://packetstormsecurity.com/files/162092/Pulse-Secure-VPN-Arbitrary-Command-Execution.html REF http://www.securityfocus.com/bid/108073 REF https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0010 REF https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11539 REF https://www.kb.cert.org/vuls/id/927237

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