{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53771 exists.","fix":"No fix has been published for CVE-2025-53771 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-53771 is a medium-severity authentication bypass vulnerability in Microsoft Sharepoint Server, published on 20 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-53771 and fix it if it is affected.\n\nWhat it is: CVE-2025-53771 is a medium-severity authentication bypass vulnerability in Microsoft Sharepoint Server, published on 20 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53771 exists.\n\nAffected product: Microsoft Sharepoint Server. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-53771/ (Markdown: https://insights.sbomify.com/CVE-2025-53771/index.md)","id":"CVE-2025-53771","markdown":"https://insights.sbomify.com/CVE-2025-53771/index.md","name":"CVE-2025-53771","record":{"aliases":["GHSA-6pmq-337c-gv96"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"SharePoint Server","requires_auth":"none","summary":"An unauthorized attacker can perform spoofing attacks against Microsoft SharePoint Server due to improper authentication mechanisms.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"sharepoint_server","vendor":"microsoft"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2025-07-08","github_poc":0,"max_poc_stars":null,"metasploit":1,"nuclei":1,"refs":[{"date":"2025-07-08","kind":"metasploit","ref":"exploit/windows/http/sharepoint_toolpane_rce","stars":null,"title":"Microsoft SharePoint Server ToolPane Unauthenticated Remote Code Execution (aka ToolShell)"},{"date":null,"kind":"nuclei","ref":"http/cves/2025/CVE-2025-53771.yaml","stars":null,"title":"Microsoft SharePoint Server - Authentication Bypass (ToolShell)"}],"tier":"weaponised"},"has_fix":null,"headline":"Microsoft SharePoint Server Spoofing Vulnerability","id":"CVE-2025-53771","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:sharepoint_server","products":["microsoft:sharepoint_server"],"type":"auth_bypass","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Web Deploy Remote Code Execution Vulnerability","id":"CVE-2025-53772"},"packages":[],"prev":{"headline":"Microsoft SharePoint Deserialization of Untrusted Data","id":"CVE-2025-53770"},"products":["Microsoft SharePoint Enterprise Server 2016","Microsoft SharePoint Server 2019","Microsoft SharePoint Server Subscription Edition"],"published":"2025-07-20","related":[{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data Vulnerability","id":"CVE-2026-50522","kev_date_added":"2026-07-22","published":"2026-07-14"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data","id":"CVE-2026-58644","kev_date_added":"2026-07-16","published":"2026-07-14"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data","id":"CVE-2026-20963","kev_date_added":"2026-03-18","published":"2026-01-13"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data","id":"CVE-2025-53770","kev_date_added":"2025-07-20","published":"2025-07-20"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Server Privilege Escalation","id":"CVE-2023-29357","kev_date_added":"2024-01-10","published":"2023-06-13"},{"cvss_score":9.1,"headline":"Microsoft SharePoint Weak Authentication","id":"CVE-2026-55040","kev_date_added":"2026-08-18","published":"2026-07-14"},{"cvss_score":8.8,"headline":"Microsoft SharePoint Code Injection","id":"CVE-2026-65660","kev_date_added":"2026-09-25","published":"2026-08-11"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-13","vendors":["Microsoft"]},"summary":"An unauthorized attacker can perform spoofing attacks against Microsoft SharePoint Server due to improper authentication mechanisms.","url":"https://insights.sbomify.com/CVE-2025-53771/"}