Microsoft SharePoint - Remote Code Execution

🗓️ 17 Oct 2026 02:05:04Reported by ProjectDiscoveryType

nuclei🔗 github.com👁 105 Views

Microsoft SharePoint - Remote Code Execution vulnerability, allows remote attackers to execute arbitrary code. Apply Microsoft security updates to mitigate the risk

Reporter	Title	Published	Views	Family All 37
zdt	Microsoft SharePoint SSI / ViewState Remote Code Execution Exploit	19 Oct 202000:00	–	zdt
attackerkb	CVE-2020-16952 — Microsoft SharePoint Remote Code Execution Vulnerabilities	16 Oct 202000:00	–	attackerkb
Information Security Automation	Vulristics Vulnerability Score, Automated Data Collection and Microsoft Patch Tuesdays Q4 2020	11 Jan 202101:50	–	avleonov
BDU FSTEC	Microsoft SharePoint Server Code Execution	22 Oct 202000:00	–	bdu_fstec
BDU FSTEC	Microsoft SharePoint Server Data Source Validation Code Execution	26 Nov 202000:00	–	bdu_fstec
Circl	CVE-2020-16952	16 Oct 202019:37	–	circl
CISA	NCSC Releases Alert on Microsoft SharePoint Vulnerability	16 Oct 202000:00	–	cisa
CNVD	Microsoft SharePoint Access Control Error Vulnerability	28 Oct 202000:00	–	cnvd
Check Point Advisories	Microsoft SharePoint Remote Code Execution (CVE-2020-16952)	20 Oct 202000:00	–	checkpoint_advisories
CVE	CVE-2020-16952	16 Oct 202022:18	–	cve

Source	Link
srcincite	www.srcincite.io/pocs/cve-2020-16952.py.txt
portal	www.portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16952
github	www.github.com/rapid7/metasploit-framework/blob/1a341ae93191ac5f6d8a9603aebb6b3a1f65f107/documentation/modules/exploit/windows/http/sharepoint_ssi_viewstate.md
nvd	www.nvd.nist.gov/vuln/detail/CVE-2020-16952
github	www.github.com/ARPSyndicate/cvemon

id: CVE-2020-16952

info:
  name: Microsoft SharePoint - Remote Code Execution
  author: dwisiswant0
  severity: high
  description: Microsoft SharePoint is vulnerable to a remote code execution when the software fails to check the source markup of an application package.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system, potentially leading to a complete compromise of the SharePoint server.
  remediation: |
    Apply the latest security updates provided by Microsoft to address this vulnerability.
  reference:
    - https://srcincite.io/pocs/cve-2020-16952.py.txt
    - https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16952
    - https://github.com/rapid7/metasploit-framework/blob/1a341ae93191ac5f6d8a9603aebb6b3a1f65f107/documentation/modules/exploit/windows/http/sharepoint_ssi_viewstate.md
    - https://nvd.nist.gov/vuln/detail/CVE-2020-16952
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
    cvss-score: 8.6
    cve-id: CVE-2020-16952
    cwe-id: CWE-346
    epss-score: 0.71095
    epss-percentile: 0.99402
    cpe: cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: microsoft
    product: sharepoint_enterprise_server
  tags: cve,cve2020,msf,sharepoint,iis,microsoft,ssi,rce,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "15\\.0\\.0\\.(4571|5275|4351|5056)"
          - "16\\.0\\.0\\.(10337|10364|10366)"
          # - "16.0.10364.20001"
        condition: or

      - type: regex
        part: header
        regex:
          - "(?i)(Microsoftsharepointteamservices:)"

      - type: status
        status:
          - 200
          - 201
        condition: or
# digest: 4b0a00483046022100fc056989a748e8ae7963861354ec0b3b06089b8a9a92c9c5ddbf62e6ecf4b540022100b6d84b63c8bce65891520bec247d755edd02a012a4efafbf25600645566bdeb3:922c64590222798bb761d5b6d8e72950

04 Feb 2026 07:00Current

8High risk

Vulners AI Score8

CVSS 26.8

CVSS 3.17.8 - 8.6

EPSS0.71095