{"id":"CVE-2020-11581","aliases":["EUVD-2020-3931","GHSA-7xjp-88f4-r966"],"status":"published","title":"An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet...","description":"An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, allows a man-in-the-middle attacker to perform OS command injection attacks (against a client) via shell metacharacters to the doCustomRemediateInstructions method, because Runtime.getRuntime().exec() is used.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.09839,"percentile":0.95597,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2020-04-06T20:03:38Z","modified":"2026-06-17T02:50:25Z","products":[{"vendor":"pulsesecure","product":"pulse_connect_secure"},{"vendor":"pulsesecure","product":"pulse_policy_secure"}],"references":[{"url":"https://git.lsd.cat/g/pulse-host-checker-rce","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11581"},{"url":"https://github.com/advisories/GHSA-7xjp-88f4-r966"}],"sources":{"cve":[{"id":"CVE-2020-11581","description":"An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, allows a man-in-the-middle attacker to perform OS command injection attacks (against a client) via shell metacharacters to the doCustomRemediateInstructions method, because Runtime.getRuntime().exec() is used.","status":"published","published":"2020-04-06T20:03:38Z","modified":"2024-08-04T11:35:13.241Z","updated_at":"2026-11-02T14:35:57.67317Z"}],"euvd":[{"id":"EUVD-2020-3931","description":"An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, allows a man-in-the-middle attacker to perform OS command injection attacks (against a client) via shell metacharacters to the doCustomRemediateInstructions method, because Runtime.getRuntime().exec() is used.","status":"published","published":"2020-04-06T20:03:38Z","modified":"2024-08-04T11:35:13Z","updated_at":"2026-11-03T03:07:42.866588Z"}],"ghsa":[{"id":"GHSA-7xjp-88f4-r966","title":"An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet...","description":"An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, allows a man-in-the-middle attacker to perform OS command injection attacks (against a client) via shell metacharacters to the doCustomRemediateInstructions method, because Runtime.getRuntime().exec() is used.","status":"published","published":"2022-05-24T17:13:25Z","modified":"2023-01-29T05:02:19Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:45:02.98103Z"}],"nvd":[{"id":"CVE-2020-11581","description":"An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, allows a man-in-the-middle attacker to perform OS command injection attacks (against a client) via shell metacharacters to the doCustomRemediateInstructions method, because Runtime.getRuntime().exec() is used.","status":"published","published":"2020-04-06T21:15:13.56Z","modified":"2026-06-17T02:50:25.137Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:05:57.678762Z"}]}}