{"answers":{"affected":"It affects 19 products.","exploited":"Yes. Attackers have exploited CVE-2021-33044 in the wild since at least 21 Aug 2024.","fix":"No fix has been published for CVE-2021-33044 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 11 Sep 2024.","what":"CVE-2021-33044 is a critical authentication bypass vulnerability in Some Dahua IP Camera, Video Intercom, PTZ Dome Camera, Thermal Camera devices, published on 15 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-33044 and fix it if it is affected.\n\nWhat it is: CVE-2021-33044 is a critical authentication bypass vulnerability in Some Dahua IP Camera, Video Intercom, PTZ Dome Camera, Thermal Camera devices, published on 15 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2021-33044 in the wild since at least 21 Aug 2024.\n\nAffected product: Some Dahua IP Camera, Video Intercom, PTZ Dome Camera, Thermal Camera devices. 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-2021-33044/ (Markdown: https://insights.sbomify.com/CVE-2021-33044/index.md)","id":"CVE-2021-33044","markdown":"https://insights.sbomify.com/CVE-2021-33044/index.md","name":"CVE-2021-33044","record":{"aliases":["GHSA-h2j4-m7qg-8m4g"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Dahua IP Camera","requires_auth":"none","summary":"Attackers can bypass device identity authentication by constructing malicious data packets, allowing unauthorized access to Dahua IP cameras and related devices.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"dahua","cpe":[{"product":"ipc-hum7xxx_firmware","vendor":"dahuasecurity"},{"product":"ipc-hx3xxx_firmware","vendor":"dahuasecurity"},{"product":"ipc-hx5xxx_firmware","vendor":"dahuasecurity"},{"product":"sd1a1_firmware","vendor":"dahuasecurity"},{"product":"sd22_firmware","vendor":"dahuasecurity"},{"product":"sd49_firmware","vendor":"dahuasecurity"},{"product":"sd50_firmware","vendor":"dahuasecurity"},{"product":"sd52c_firmware","vendor":"dahuasecurity"},{"product":"sd6al_firmware","vendor":"dahuasecurity"},{"product":"tpc-bf1241_firmware","vendor":"dahuasecurity"},{"product":"tpc-bf2221_firmware","vendor":"dahuasecurity"},{"product":"tpc-bf5x01_firmware","vendor":"dahuasecurity"},{"product":"tpc-bf5x21_firmware","vendor":"dahuasecurity"},{"product":"tpc-pt8x21b_firmware","vendor":"dahuasecurity"},{"product":"tpc-sd2221_firmware","vendor":"dahuasecurity"},{"product":"tpc-sd8x21_firmware","vendor":"dahuasecurity"},{"product":"vth-542xh_firmware","vendor":"dahuasecurity"},{"product":"vto-65xxx_firmware","vendor":"dahuasecurity"},{"product":"vto-75x95x_firmware","vendor":"dahuasecurity"}],"cvss":{"score":9.8,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"The identity authentication bypass vulnerability found in some Dahua products during the login process. Attackers can bypass device identity authentication by constructing malicious data packets.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2021-10-11","github_poc":7,"max_poc_stars":204,"metasploit":0,"nuclei":1,"refs":[{"date":"2021-10-11T22:08:47Z","kind":"github_poc","ref":"https://github.com/bp2008/DahuaLoginBypass","stars":204,"title":"Chrome extension that uses vulnerabilities CVE-2021-33044 and CVE-2021-33045 to log in to Dahua cameras without authentication."},{"date":"2026-03-03T21:28:23Z","kind":"github_poc","ref":"https://github.com/umair-aziz025/dahua-cve-research","stars":32,"title":"Dahua IP camera CVE research toolkit (CVE-2021-33044/33045, CVE-2025-31700/31701)"},{"date":"2021-10-18T16:17:05Z","kind":"github_poc","ref":"https://github.com/Spy0x7/CVE-2021-33044","stars":5,"title":"Dahua   IPC/VTH/VTO devices auth bypass exploit"},{"date":"2023-10-22T14:02:49Z","kind":"github_poc","ref":"https://github.com/haingn/LoHongCam-CVE-2021-33044","stars":4,"title":null},{"date":"2026-01-25T10:36:13Z","kind":"github_poc","ref":"https://github.com/Baza-NATO/CVE-2021-33044","stars":1,"title":null},{"date":"2026-03-24T03:20:55Z","kind":"github_poc","ref":"https://github.com/eagle-nett/DAHUA_AUTH-BYPASS-CVE-2021-33044","stars":1,"title":"Camera Dahua Research lỗ hổng CVE-2021-33044"},{"date":"2026-06-24T12:31:56Z","kind":"github_poc","ref":"https://github.com/litndat/Camera-Dahua-Research-l-h-ng-CVE-2021-33044","stars":0,"title":"DAHUA_AUTH-BYPASS-CVE-2021-33044"},{"date":null,"kind":"nuclei","ref":"http/cves/2021/CVE-2021-33044.yaml","stars":null,"title":"Dahua IPC/VTH/VTO - Authentication Bypass"}],"tier":"exploited"},"has_fix":null,"headline":"Dahua IP Camera Authentication Bypass","id":"CVE-2021-33044","indexable":true,"kev":{"dateAdded":"2024-08-21","dueDate":"2024-09-11","knownRansomwareCampaignUse":"Unknown","product":"IP Camera Firmware","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","vendorProject":"Dahua","vulnerabilityName":"Dahua IP Camera Authentication Bypass Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Dahua IP Camera Authentication Bypass","id":"CVE-2021-33045"},"packages":[],"prev":{"headline":"Cross-site Scripting in vmd","id":"CVE-2021-33041"},"products":["Some Dahua IP Camera, Video Intercom, PTZ Dome Camera, Thermal Camera devices"],"published":"2021-09-15","related":[{"cvss_score":9.8,"headline":"Dahua IP Camera Authentication Bypass","id":"CVE-2021-33045","kev_date_added":"2024-08-21","published":"2021-09-15"}],"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":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-01-12","vendors":["n/a"]},"summary":"Attackers can bypass device identity authentication by constructing malicious data packets, allowing unauthorized access to Dahua IP cameras and related devices.","url":"https://insights.sbomify.com/CVE-2021-33044/"}