{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-66086 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-66086 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-66086 is a high-severity memory corruption vulnerability in Unisoc (Shanghai) Technologies Co., Ltd. Modem, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-66086 and fix it if it is affected.\n\nWhat it is: CVE-2026-66086 is a high-severity memory corruption vulnerability in Unisoc (Shanghai) Technologies Co., Ltd. Modem, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-66086 in the wild and no public exploit code.\n\nAffected product: Unisoc (Shanghai) Technologies Co., Ltd. Modem. 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-2026-66086/ (Markdown: https://insights.sbomify.com/CVE-2026-66086/index.md)","id":"CVE-2026-66086","markdown":"https://insights.sbomify.com/CVE-2026-66086/index.md","name":"CVE-2026-66086","record":{"aliases":["GHSA-x9v2-w4w8-7v7g"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Unisoc modem firmware","requires_auth":"none","summary":"A stack-based buffer overflow in Unisoc modem firmware allows remote attackers to execute arbitrary code or cause denial of service via malicious SIB1 messages.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Unisoc","cpe":[],"cvss":{"score":8.3,"severity":"high","source":"cna","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-121","name":"Stack-based Buffer Overflow"}],"description":"In the modem OTA stack, there is a possible stack-based buffer overflow due to improper validation of scheduling information in SIB1 messages. This could lead to remote code execution or denial of service with no additional execution privileges needed.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Stack-based Buffer Overflow in Modem","id":"CVE-2026-66086","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache DolphinScheduler: Project Authorization Bypass in the Task instance stop/savepoint Endpoint","id":"CVE-2026-66087"},"packages":[],"prev":{"headline":"Information Disclosure in Modem","id":"CVE-2026-66085"},"products":["Modem"],"published":"2026-10-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Unisoc (Shanghai) Technologies Co., Ltd."]},"summary":"A stack-based buffer overflow in Unisoc modem firmware allows remote attackers to execute arbitrary code or cause denial of service via malicious SIB1 messages.","url":"https://insights.sbomify.com/CVE-2026-66086/"}