{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-121969 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-121969 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-121969 is a high-severity vulnerability in quozl netrek-client-cow, published on 4 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-121969 and fix it if it is affected.\n\nWhat it is: CVE-2026-121969 is a high-severity vulnerability in quozl netrek-client-cow, published on 4 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-121969 in the wild and no public exploit code.\n\nAffected product: quozl netrek-client-cow. 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-2026-121969/ (Markdown: https://insights.sbomify.com/CVE-2026-121969/index.md)","id":"CVE-2026-121969","markdown":"https://insights.sbomify.com/CVE-2026-121969/index.md","name":"CVE-2026-121969","record":{"aliases":["GHSA-2v39-q9qf-3m9g","UBUNTU-CVE-2026-121969"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"netrek-client-cow through 3.3.3 contains a stack-based buffer overflow vulnerability in handleSMessage() in short.c that allows malicious servers to overflow a 100-byte stack buffer by sending oversized SP_S_MESSAGE packets. A malicious Netrek server or man-in-the-middle on the plaintext TCP connection can send overlong or unterminated message bodies to write server-controlled bytes onto the stack and crash the client.","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":"netrek-client-cow through 3.3.3 Stack Buffer Overflow via handleSMessage","id":"CVE-2026-121969","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Pay with Vipps and MobilePay for WooCommerce before 6.4.1 Webhook Signature Forgery","id":"CVE-2026-121970"},"nickname":null,"packages":[],"prev":{"headline":"Netrek-client-cow through 3.3.3 Out-of-Bounds Read via SP_S_MESSAGE Packets","id":"CVE-2026-121968"},"products":["netrek-client-cow"],"published":"2026-11-04","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-11-05","vendors":["quozl"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-121969/"}