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TI-2021-05754 Aliases CVE-2021-22893GHSA-hcxw-prp6-q3jq

Improper authentication in Pulse Connect Secure

Priority CRITICAL 100Exploited in the wildCWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287, CWE-416 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2021-11-03CISA due date 2022-05-03Known ransomware use
EPSS 0.47508 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Pulse Connect SecurePCS 9.0R3 or above, PCS 9.1R1 and above—No fix listedCNA
  • Pulse Connect Secure Vendor— Affected PCS 9.0R3 or above, PCS 9.1R1 and above Fixed in — No fix listed CNA

CPE configurations NVD · 36

CPEVersionsRoleVendor
cpe:2.3:a:ivanti:connect_secure:9.0:-:*:*:*:*:*:*9.0VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r1:*:*:*:*:*:*9.0 r1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r2:*:*:*:*:*:*9.0 r2VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r2.1:*:*:*:*:*:*9.0 r2.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r3:*:*:*:*:*:*9.0 r3VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r3.1:*:*:*:*:*:*9.0 r3.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r3.2:*:*:*:*:*:*9.0 r3.2VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r3.3:*:*:*:*:*:*9.0 r3.3VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r3.5:*:*:*:*:*:*9.0 r3.5VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r4:*:*:*:*:*:*9.0 r4VulnerableIvanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:-:*:*:*:*:*:* Versions 9.0 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r1:*:*:*:*:*:* Versions 9.0 r1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r2:*:*:*:*:*:* Versions 9.0 r2 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r2.1:*:*:*:*:*:* Versions 9.0 r2.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r3:*:*:*:*:*:* Versions 9.0 r3 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r3.1:*:*:*:*:*:* Versions 9.0 r3.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r3.2:*:*:*:*:*:* Versions 9.0 r3.2 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r3.3:*:*:*:*:*:* Versions 9.0 r3.3 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r3.5:*:*:*:*:*:* Versions 9.0 r3.5 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r4:*:*:*:*:*:* Versions 9.0 r4 Vulnerable ·Ivanti
Show 26 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:ivanti:connect_secure:9.0:r4.1:*:*:*:*:*:*9.0 r4.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r5.0:*:*:*:*:*:*9.0 r5.0VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.0:r6.0:*:*:*:*:*:*9.0 r6.0VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:*9.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r1:*:*:*:*:*:*9.1 r1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r10.0:*:*:*:*:*:*9.1 r10.0VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r10.2:*:*:*:*:*:*9.1 r10.2VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r11.0:*:*:*:*:*:*9.1 r11.0VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r11.1:*:*:*:*:*:*9.1 r11.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r11.3:*:*:*:*:*:*9.1 r11.3VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r2:*:*:*:*:*:*9.1 r2VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r3:*:*:*:*:*:*9.1 r3VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r4:*:*:*:*:*:*9.1 r4VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:*9.1 r4.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:*9.1 r4.2VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:*9.1 r4.3VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r5:*:*:*:*:*:*9.1 r5VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r6:*:*:*:*:*:*9.1 r6VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r7:*:*:*:*:*:*9.1 r7VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r8:*:*:*:*:*:*9.1 r8VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r8.1:*:*:*:*:*:*9.1 r8.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r8.2:*:*:*:*:*:*9.1 r8.2VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r8.4:*:*:*:*:*:*9.1 r8.4VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r9:*:*:*:*:*:*9.1 r9VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r9.1:*:*:*:*:*:*9.1 r9.1VulnerableIvanti
cpe:2.3:a:ivanti:connect_secure:9.1:r9.2:*:*:*:*:*:*9.1 r9.2VulnerableIvanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r4.1:*:*:*:*:*:* Versions 9.0 r4.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r5.0:*:*:*:*:*:* Versions 9.0 r5.0 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.0:r6.0:*:*:*:*:*:* Versions 9.0 r6.0 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:* Versions 9.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r1:*:*:*:*:*:* Versions 9.1 r1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r10.0:*:*:*:*:*:* Versions 9.1 r10.0 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r10.2:*:*:*:*:*:* Versions 9.1 r10.2 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r11.0:*:*:*:*:*:* Versions 9.1 r11.0 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r11.1:*:*:*:*:*:* Versions 9.1 r11.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r11.3:*:*:*:*:*:* Versions 9.1 r11.3 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r2:*:*:*:*:*:* Versions 9.1 r2 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r3:*:*:*:*:*:* Versions 9.1 r3 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r4:*:*:*:*:*:* Versions 9.1 r4 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:* Versions 9.1 r4.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:* Versions 9.1 r4.2 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:* Versions 9.1 r4.3 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r5:*:*:*:*:*:* Versions 9.1 r5 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r6:*:*:*:*:*:* Versions 9.1 r6 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r7:*:*:*:*:*:* Versions 9.1 r7 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r8:*:*:*:*:*:* Versions 9.1 r8 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r8.1:*:*:*:*:*:* Versions 9.1 r8.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r8.2:*:*:*:*:*:* Versions 9.1 r8.2 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r8.4:*:*:*:*:*:* Versions 9.1 r8.4 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r9:*:*:*:*:*:* Versions 9.1 r9 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r9.1:*:*:*:*:*:* Versions 9.1 r9.1 Vulnerable ·Ivanti
  • cpe:2.3:a:ivanti:connect_secure:9.1:r9.2:*:*:*:*:*:* Versions 9.1 r9.2 Vulnerable ·Ivanti

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2021-11-03 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2021-22893
  3. 2026-10-03 Alias added: GHSA-hcxw-prp6-q3jq

References

Advisory 4

  • TI-2025-16349 Stack-based buffer overflow in Ivanti Connect Secure KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-08600 In Pulse Secure Pulse Connect Secure (PCS) 8.2 before 8.2R12.1, 8.3 before 8.3R7.1, and… KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-00226 Stack-based buffer overflow in Ivanti Connect Secure KEVCVSS 3.1CRITICAL 9.0
  • TI-2024-14549 Command injection in Ivanti ICS KEVCVSS 3.1CRITICAL 9.1
  • TI-2021-05760 Command injection in Pulse Connect Secure KEVCVSS 3.1HIGH 8.8
  • TI-2021-05755 Code injection in Pulse Connect Secure KEVCVSS 3.1HIGH 8.8
See all 132 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences