{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-3977 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-3977 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-3977 is a high-severity vulnerability in Mikrotik Routeros, published on 28 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-3977 and fix it if it is affected.\n\nWhat it is: CVE-2019-3977 is a high-severity vulnerability in Mikrotik Routeros, published on 28 Oct 2019. 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-2019-3977 in the wild and no public exploit code.\n\nAffected product: Mikrotik Routeros. 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-2019-3977/ (Markdown: https://insights.sbomify.com/CVE-2019-3977/index.md)","id":"CVE-2019-3977","markdown":"https://insights.sbomify.com/CVE-2019-3977/index.md","name":"CVE-2019-3977","record":{"aliases":["GHSA-94gr-5fp3-387v"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"MikroTik RouterOS","requires_auth":"none","summary":"Attackers can trick RouterOS into installing malicious or older firmware via autoupgrade, potentially resetting credentials and bypassing security controls.","user_interaction":"not_required","vuln_class":"supply_chain"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"tenable","cpe":[{"product":"routeros","vendor":"mikrotik"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-494","name":"Download of Code Without Integrity Check"}],"description":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into \"upgrading\" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.","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":"Supply chain in MikroTik RouterOS","id":"CVE-2019-3977","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"mikrotik:routeros","products":["mikrotik:routeros"],"type":"supply_chain","year":"2019"},"n_packages":0,"n_references":1,"next":{"headline":"Server-side request forgery in MikroTik RouterOS","id":"CVE-2019-3978"},"packages":[],"prev":{"headline":"Path traversal in MikroTik RouterOS","id":"CVE-2019-3976"},"products":["MikroTik RouterOS"],"published":"2019-10-28","related":[{"cvss_score":9.8,"headline":"MikroTik RouterOS Stack-Based Buffer Overflow","id":"CVE-2018-7445","kev_date_added":"2022-09-08","published":"2018-03-19"},{"cvss_score":9.2,"headline":"MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command","id":"CVE-2026-86060","kev_date_added":"2026-09-10","published":"2026-09-05"},{"cvss_score":9.1,"headline":"MikroTik Router OS Directory Traversal","id":"CVE-2018-14847","kev_date_added":"2021-12-01","published":"2018-08-02"},{"cvss_score":8.8,"headline":"MikroTik RouterOS Missing Authentication for Critical Function","id":"CVE-2026-67277","kev_date_added":"2026-09-10","published":"2026-09-05"},{"cvss_score":6.9,"headline":"Mikrotik RouterOS Improper Enforcement of Behavioral Workflow","id":"CVE-2026-67279","kev_date_added":"2026-09-25","published":"2026-09-05"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-20149","kev_date_added":null,"published":"2022-10-15"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2022-34960","kev_date_added":null,"published":"2022-08-25"}],"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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can trick RouterOS into installing malicious or older firmware via autoupgrade, potentially resetting credentials and bypassing security controls.","url":"https://insights.sbomify.com/CVE-2019-3977/"}