{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-124737 in the wild and no public exploit code.","exposure":"An affected version is only exploitable if your software uses the vulnerable function or option. Many projects that include it are not exposed.","fix":"No fix has been published for CVE-2026-124737 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-124737 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 6, published on 11 Nov 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-124737 and fix it if it is affected.\n\nWhat it is: CVE-2026-124737 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 6, published on 11 Nov 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-124737 in the wild and no public exploit code.\nExposure: An affected version is only exploitable if your software uses the vulnerable function or option. Many projects that include it are not exposed.\n\nAffected product: Red Hat Enterprise Linux 6. 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-2026-124737/ (Markdown: https://insights.sbomify.com/CVE-2026-124737/index.md)","id":"CVE-2026-124737","markdown":"https://insights.sbomify.com/CVE-2026-124737/index.md","name":"CVE-2026-124737","record":{"aliases":["GHSA-r558-xpjx-65pf","UBUNTU-CVE-2026-124737"],"analysis":{"component_type":"library","exploitable_when_present":false,"fix_type":"no_fix_stated","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"embedded Unix utilities","requires_auth":"none","requires_specific_call":true,"summary":"A malicious TFTP server can overflow a heap buffer in BusyBox's TFTP client with a small block size, executing code or crashing it.","user_interaction":"required","vuln_class":"memory_corruption","vulnerable_functions":[]},"analysis_generated_by":"sbomify/insights-2b-fp8","assigner":"redhat","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"A flaw was found in BusyBox. When the TFTP (Trivial File Transfer Protocol) client requests a custom small block size and receives a standard response, it falls back to the default block size without resizing the allocated memory buffer. A malicious TFTP server can exploit this issue by sending standard-sized network packets during a transfer, causing a heap buffer overflow. This flaw allows an attacker to achieve arbitrary code execution or cause a Denial of Service (DoS) by crashing the application.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Busybox: heap buffer overflow in the tftp client on fallback to the default block size","id":"CVE-2026-124737","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Busybox: httpd password rule bypass for pre-compressed .gz files via accept-encoding: gzip","id":"CVE-2026-124738"},"nickname":null,"packages":[],"prev":{"headline":"URL Redirection to Untrusted Site in Progress Telerik UI for .NET MAUI","id":"CVE-2026-124705"},"products":["Red Hat Enterprise Linux 6","Red Hat Hardened Images"],"published":"2026-11-11","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-11","vendors":["Red Hat"]},"summary":"A malicious TFTP server can overflow a heap buffer in BusyBox's TFTP client with a small block size, executing code or crashing it.","url":"https://insights.sbomify.com/CVE-2026-124737/"}