onyx

onyx --cves cve-2020-8260

CVE-2020-8260

HIGHKEVPOCPulse Secure
score
<0.1
cvss
7.2
epss
96.5%
published
2020-10-28
kev added
2021-11-03
first seen

Pulse Connect Secure < 9.1R9 contains a remote code execution caused by uncontrolled gzip extraction in the admin web interface, letting authenticated attackers execute arbitrary code, exploit requires authentication.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2020-10-28 — PublishedP2021-11-03 — Added to CISA KEVK2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoC: http://packetstormsecurity.com/files/160619/Pulse-Secure-VPN-Remote-Code-Execution.htmlXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 96.5%2026-09-23: epss 96.5%2026-09-24: epss 96.5%2026-09-25: epss 96.5%2026-09-26: epss 96.5%2026-09-27: epss 96.5%2026-09-28: epss 96.5%2026-09-29: epss 96.5%2026-09-30: epss 96.5%2026-10-01: epss 96.5%2026-10-02: epss 96.5%2026-10-03: epss 96.5%2026-10-04: epss 96.5%2026-10-05: epss 96.5%2026-10-06: epss 96.5%2026-10-07: epss 96.5%2026-10-08: epss 96.5%2026-10-09: epss 96.5%2026-10-10: epss 96.5%2026-10-11: epss 96.5%2026-10-12: epss 96.5%2026-10-13: epss 96.5%2026-10-14: epss 96.5%2026-10-15: epss 96.5%2026-10-16: epss 96.5%2026-10-18: epss 96.5%2026-10-19: epss 96.5%2026-10-20: epss 96.5%2026-10-21: epss 96.5%96.5%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Added to CISA KEV
  3. Tracked by Onyx
  4. Public PoC http://packetstormsecurity.com/files/160619/Pulse-Secure-VPN-Remote-Code-Execution.html

Exploit availability

Weaknesses

CWE-434

References 9