How severe is CVE-2019-11542?

CVE-2019-11542 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-11542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 66% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11542?

CVE-2019-11542 primarily affects Ivanti Connect Secure. In total, 97 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-11542?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-11542 published?

CVE-2019-11542 was published on 2019-04-26 and last updated on 2026-06-17.

CVE-2019-11542

CVE-2019-11542 is a high-severity vulnerability in Ivanti Connect Secure with a CVSS 3.x base score of 7.2. Its EPSS exploit-prediction score of 66% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 66% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Ivanti Connect Secure
Published: 2019-04-26
Last modified: 2026-06-17

Description

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, an authenticated attacker (via the admin web interface) can send a specially crafted message resulting in a stack buffer overflow.

Frequently asked questions

What is CVE-2019-11542?: 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, an authenticated attacker (via the admin web interface) can send a specially crafted message resulting in a stack buffer overflow.
How severe is CVE-2019-11542?: CVE-2019-11542 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-11542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 66% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11542?: CVE-2019-11542 primarily affects Ivanti Connect Secure. In total, 97 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-11542?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-11542 published?: CVE-2019-11542 was published on 2019-04-26 and last updated on 2026-06-17.

References

Affected products (97)

cpe:2.3:a:ivanti:connect_secure:8.1:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.2:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.3:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.1r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r1.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r2.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r3.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r3.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r4.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r4.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r5.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r5.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r6.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r7.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r7.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2rx:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.3rx:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0r1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0r2:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0r2.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0r3:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0r3.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0r3.2:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0rx:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r1.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r2.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r2.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r3.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r3.2:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r4.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r5.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r6.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r7.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r8.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r9.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r9.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r10.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r11.0:*:*:*:*:*:*:*

More vulnerabilities in Ivanti Connect Secure

CVE-2021-22893 — Critical (CVSS 10.0): Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the…
CVE-2019-11510 — Critical (CVSS 10.0): In Pulse Secure Pulse Connect Secure (PCS) 8.2 before 8.2R12.1, 8.3 before 8.3R7.1, and 9.0 before 9.0R3.4, an…
CVE-2016-4787 — Critical (CVSS 10.0): Pulse Connect Secure (PCS) 8.2 before 8.2r1, 8.1 before 8.1r2, 8.0 before 8.0r10, and 7.4 before 7.4r13.4 allow remote…
CVE-2025-22467 — Critical (CVSS 9.9): A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6 allows a remote authenticated attacker…
CVE-2024-21894 — Critical (CVSS 9.8): A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows…
CVE-2018-20813 — Critical (CVSS 9.8): An input validation issue has been found with login_meeting.cgi in Pulse Secure Pulse Connect Secure 8.3RX before 8.3R2.

All CVEs affecting Ivanti Connect Secure →

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