Vulnerability-Lookup

GHSA-HCXW-PRP6-Q3JQ

Vulnerability from github – Published: 2022-05-24 17:48 – Updated: 2025-10-22 00:32

Details

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.

Severity

10.0 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2021-22893"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-23T17:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-hcxw-prp6-q3jq",
  "modified": "2025-10-22T00:32:07Z",
  "published": "2022-05-24T17:48:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22893"
    },
    {
      "type": "WEB",
      "url": "https://blog.pulsesecure.net/pulse-connect-secure-security-update"
    },
    {
      "type": "WEB",
      "url": "https://kb.cert.org/vuls/id/213092"
    },
    {
      "type": "WEB",
      "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893"
    },
    {
      "type": "WEB",
      "url": "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/213092"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-22893 (GCVE-0-2021-22893)

Vulnerability from cvelistv5 – Published: 2021-04-23 16:29 – Updated: 2025-10-21 23:25

Summary

Severity

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-287 - Improper Authentication - Generic (CWE-287)

Assigner

hackerone

References

6 references

URL	Tags
https://kb.pulsesecure.net/articles/Pulse_Securit…	x_refsource_MISC
https://blog.pulsesecure.net/pulse-connect-secure…	x_refsource_MISC
https://www.fireeye.com/blog/threat-research/2021…	x_refsource_MISC
https://kb.cert.org/vuls/id/213092	x_refsource_MISC
https://www.kb.cert.org/vuls/id/213092
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
n/a	Pulse Connect Secure	Affected: PCS 9.0R3 or above, PCS 9.1R1 and above

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JSON

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              "baseScore": 10,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
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              "scope": "CHANGED",
              "userInteraction": "NONE",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-HCXW-PRP6-Q3JQ

CVE-2021-22893 (GCVE-0-2021-22893)

Tags

Sightings

Nomenclature