{"answers":{"affected":"It affects 7 products.","exploited":"There is no known exploitation of CVE-2026-54121 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-54121 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-54121 is a high-severity missing authorization vulnerability in Microsoft Windows 10 1607, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-54121 and fix it if it is affected.\n\nWhat it is: CVE-2026-54121 is a high-severity missing authorization vulnerability in Microsoft Windows 10 1607, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-54121 in the wild and no public exploit code.\n\nAffected product: Microsoft Windows 10 1607. 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-2026-54121/ (Markdown: https://insights.sbomify.com/CVE-2026-54121/index.md)","id":"CVE-2026-54121","markdown":"https://insights.sbomify.com/CVE-2026-54121/index.md","name":"CVE-2026-54121","record":{"aliases":["GHSA-64qv-2ffq-h4w6"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Windows AD CS","requires_auth":"low_privilege","summary":"An authorized attacker can elevate privileges over the network due to improper authorization in Active Directory Certificate Services.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10_1607","vendor":"microsoft"},{"product":"windows_10_1809","vendor":"microsoft"},{"product":"windows_server_2012","vendor":"microsoft"},{"product":"windows_server_2016","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"},{"product":"windows_server_2022","vendor":"microsoft"},{"product":"windows_server_2025","vendor":"microsoft"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-285","name":"Improper Authorization"}],"description":"Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-07-23","github_poc":15,"max_poc_stars":338,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-07-23T18:54:34Z","kind":"github_poc","ref":"https://github.com/aniqfakhrul/CVE-2026-54121","stars":338,"title":"Certighost POC"},{"date":"2026-09-11T23:08:16Z","kind":"github_poc","ref":"https://github.com/ZeroDayEvil/CVE-2026-54121-Certighost","stars":266,"title":"🛡 Official AI Security Tool module for CVE-2026-54121 (Certighost): AD CS certificate abuse deep-dive, defensive audit workflows, and safe in-app console execution for authorized Active Directory security testing."},{"date":"2026-07-25T18:01:04Z","kind":"github_poc","ref":"https://github.com/tc4dy/CVE-2026-54121-PoC-Exploit","stars":30,"title":"CVE-2026-54121 - CertiGhost AD CS Multi-Exploit Framework | Rogue DC + LDAP spoofing, certificate abuse, PKINIT hash extraction, auto DCSync. Safe Checker + full exploit, multi-threaded mass scan, Shodan integration, JSON/CSV/JSONL output. CVSS 8.8 High. Use Ethically, Stay Legal :v"},{"date":"2026-07-27T11:04:49Z","kind":"github_poc","ref":"https://github.com/marcgoam/CVE-2026-54121-CertiGhost","stars":11,"title":"CVE-2026-54121 (Certighost) AD CS DC-impersonation PoC. Patched SAN handling + MAQ-safe account reuse."},{"date":"2026-07-31T07:17:36Z","kind":"github_poc","ref":"https://github.com/nafiez/Metasploit-CVE-2026-54121-Certighost","stars":4,"title":"A Metasploit auxiliary module that escalates from any low-privileged domain user to full domain compromise by abusing the AD CS enrollment \"chase\" fallback.  The CA can be coerced into authenticating back to attacker-controlled infrastructure and then issuing a certificate that impersonates a Domain Controller."},{"date":"2026-07-25T11:50:21Z","kind":"github_poc","ref":"https://github.com/0xredash/CVE-2026-54121","stars":2,"title":"CVE-2026-54121"},{"date":"2026-07-28T03:18:14Z","kind":"github_poc","ref":"https://github.com/ChPratik/CVE-2026-54121","stars":1,"title":"Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network."},{"date":"2026-07-31T08:04:50Z","kind":"github_poc","ref":"https://github.com/KrakenEU/CVE-2026-54121-CertiGhost","stars":1,"title":"CVE-2026-54121(CertiGhost) without MachineAccountQuota POC"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Active Directory Certificate Services Elevation of Privilege Vulnerability","id":"CVE-2026-54121","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1607","products":["microsoft:windows_10_1607","microsoft:windows_10_1809","microsoft:windows_server_2012","microsoft:windows_server_2016","microsoft:windows_server_2019","microsoft:windows_server_2022","microsoft:windows_server_2025"],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Windows GDI+ Remote Code Execution Vulnerability","id":"CVE-2026-54122"},"packages":[],"prev":{"headline":"Microsoft Surface Remote Code Execution Vulnerability","id":"CVE-2026-54120"},"products":["Windows 10 Version 1607","Windows 10 Version 1809","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)","Windows Server 2016","Windows Server 2016 (Server Core installation)","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022","Windows Server 2025","Windows Server 2025 (Server Core installation)"],"published":"2026-07-14","related":[{"cvss_score":9.8,"headline":"Microsoft Internet Key Exchange (IKE) Service Extensions Double Free","id":"CVE-2026-33824","kev_date_added":"2026-08-18","published":"2026-04-14"},{"cvss_score":8.8,"headline":"Microsoft Windows Shell Protection Mechanism Failure","id":"CVE-2026-21510","kev_date_added":"2026-02-10","published":"2026-02-10"},{"cvss_score":8.8,"headline":"Microsoft MSHTML Framework Protection Mechanism Failure","id":"CVE-2026-21513","kev_date_added":"2026-02-10","published":"2026-02-10"},{"cvss_score":8.8,"headline":"Microsoft Windows Defender SmartScreen Security Feature Bypass","id":"CVE-2023-32049","kev_date_added":"2023-07-11","published":"2023-07-11"},{"cvss_score":8.4,"headline":"Microsoft Streaming Service Untrusted Pointer Dereference","id":"CVE-2023-29360","kev_date_added":"2024-02-29","published":"2023-06-13"},{"cvss_score":7.8,"headline":"Microsoft Windows Heap-Based Buffer Overflow","id":"CVE-2026-85880","kev_date_added":"2026-09-08","published":"2026-09-08"},{"cvss_score":7.8,"headline":"Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability","id":"CVE-2026-56155","kev_date_added":"2026-07-14","published":"2026-07-14"}],"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":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-28","vendors":["Microsoft"]},"summary":"An authorized attacker can elevate privileges over the network due to improper authorization in Active Directory Certificate Services.","url":"https://insights.sbomify.com/CVE-2026-54121/"}