What is CVE-2019-11539?

CVE-2019-11539 is a high-severity vulnerability in N/a. CVSS score: 8.0/10. Published 2019-04-26.

How severe is CVE-2019-11539?

High severity. CVSS v3 base score is 8.0 out of 10.

Is CVE-2019-11539 known to be exploited?

Yes. CVE-2019-11539 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 14 public proof-of-concept repositories are indexed.

Vulnerability in N/a

CVE-2019-11539

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…

EPSS: 0.939 (99.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.0/AC:H/AV:N/A:H/C:H/I:H/PR:H/S:C/UI:N.

Affected products

N/a — versions n/a

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101 (x_refsource_CONFIRM)
108073 (vdb-entry, x_refsource_BID)
psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0010 (x_refsource_CONFIRM)
i.blackhat.com/USA-19/Wednesday/us-19-Tsai-Infiltrating-Corporate-Intranet-Like… (x_refsource_MISC)
packetstormsecurity.com/files/154376/Pulse-Secure-8.1R15.1-8.2-8.3-9.0-SSL-VPN-… (x_refsource_MISC)
devco.re/blog/2019/09/02/attacking-ssl-vpn-part-3-the-golden-Pulse-Secure-ssl-v… (x_refsource_MISC)
VU#927237 (third-party-advisory, x_refsource_CERT-VN)
packetstormsecurity.com/files/155277/Pulse-Secure-VPN-Arbitrary-Command-Executi… (x_refsource_MISC)
packetstormsecurity.com/files/162092/Pulse-Secure-VPN-Arbitrary-Command-Executi… (x_refsource_MISC)

Frequently asked questions

What is CVE-2019-11539?: CVE-2019-11539 is a high-severity vulnerability in N/a. CVSS score: 8.0/10. Published 2019-04-26.
How severe is CVE-2019-11539?: High severity. CVSS v3 base score is 8.0 out of 10.
Is CVE-2019-11539 known to be exploited?: Yes. CVE-2019-11539 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 14 public proof-of-concept repositories are indexed.