FKIE_CVE-2021-22893

Vulnerability from fkie_nvd - Published: 2021-04-23 17:15 - Updated: 2025-10-30 20:40
Severity ?
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
References
support@hackerone.comhttps://blog.pulsesecure.net/pulse-connect-secure-security-update/Vendor Advisory
support@hackerone.comhttps://kb.cert.org/vuls/id/213092Third Party Advisory, US Government Resource
support@hackerone.comhttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/Broken Link, Vendor Advisory
support@hackerone.comhttps://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://blog.pulsesecure.net/pulse-connect-secure-security-update/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://kb.cert.org/vuls/id/213092Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/Broken Link, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/213092US Government Resource
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893US Government Resource
Impacted products
Vendor Product Version
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.0
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
ivanti connect_secure 9.1
To clipboard 

{
  "cisaActionDue": "2021-04-23",
  "cisaExploitAdd": "2021-11-03",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Pulse Connect Secure versiones 9.0R3/9.1R1 y posteriores, es susceptible a una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n expuesta por las funciones de Windows File Share Browser y Pulse Secure Collaboration de Pulse Connect Secure, que pueden permitir a un usuario no autenticado llevar a cabo una ejecuci\u00f3n de c\u00f3digo remoto arbitrario en Pulse Connect Secure gateway.\u0026#xa0;Esta vulnerabilidad ha sido explotado en el wild"
    }
  ],
  "id": "CVE-2021-22893",
  "lastModified": "2025-10-30T20:40:52.027",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.0,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2021-04-23T17:15:08.127",
  "references": [
    {
      "source": "support@hackerone.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.pulsesecure.net/pulse-connect-secure-security-update/"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
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        "US Government Resource"
      ],
      "url": "https://kb.cert.org/vuls/id/213092"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
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        "Vendor Advisory"
      ],
      "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://www.kb.cert.org/vuls/id/213092"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893"
    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "support@hackerone.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

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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.