CVE-2021-22893
KEV RANSOMWARECRITICAL 10.0EPSS 47.2%
Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.
- Affected
- Pulse Connect Secure
- CVSS v3.1 NVD
- 10.0 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - CVSS v2.0 NVD
- 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 47.17% chance of exploitation in the next 30 days, 99th percentile
- CISA KEV
- added 2021-11-03, used in ransomware campaigns
- Published
- 2021-04-23
- Updated
- 2026-08-12
Proof-of-concept exploits (5)
- MRLEE123456/CVE-2021-228930★ · 2021-04-21
- ZephrFish/CVE-2021-22893_HoneyPoC247★ · 2026-07-31
- byteofandri/CVE-2021-228937★ · 2022-02-24
- byteofjoshua/CVE-2021-228937★ · 2022-02-24
- orangmuda/CVE-2021-228937★ · 2022-02-24
Security advisories
- https://blog.pulsesecure.net/pulse-connect-secure-security-update
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784
- https://kb.cert.org/vuls/id/213092
- https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass…
- https://www.kb.cert.org/vuls/id/213092