{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123958 exists.","exposure":"","fix":"No fix has been published for CVE-2026-123958 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-123958 is a critical vulnerability in TOTOLINK CA300-PoE, published on 7 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123958 and fix it if it is affected.\n\nWhat it is: CVE-2026-123958 is a critical vulnerability in TOTOLINK CA300-PoE, published on 7 Nov 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123958 exists.\n\nAffected product: TOTOLINK CA300-PoE. 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-2026-123958/ (Markdown: https://insights.sbomify.com/CVE-2026-123958/index.md)","id":"CVE-2026-123958","markdown":"https://insights.sbomify.com/CVE-2026-123958/index.md","name":"CVE-2026-123958","record":{"aliases":["GHSA-c4px-fcrj-5258"],"analysis":null,"analysis_generated_by":null,"assigner":"VulDB","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","version":"4.0"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"},{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A vulnerability was identified in TOTOLINK CA300-PoE 6.2c.884. The affected element is the function setLanConfig of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument lanDns/lanSecDns/langType leads to buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"TOTOLINK CA300-PoE cstecgi.cgi setLanConfig buffer overflow","id":"CVE-2026-123958","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"TOTOLINK CA300-PoE cstecgi.cgi setLanguageCfg buffer overflow","id":"CVE-2026-123959"},"nickname":null,"packages":[],"prev":{"headline":"TOTOLINK CA300-PoE cstecgi.cgi setIpQosRules buffer overflow","id":"CVE-2026-123957"},"products":["CA300-PoE"],"published":"2026-11-07","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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-11-11","vendors":["TOTOLINK"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123958/"}