{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123957 exists.","exposure":"","fix":"No fix has been published for CVE-2026-123957 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-123957 is a critical vulnerability in TOTOLINK CA300-PoE, published on 7 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123957 and fix it if it is affected.\n\nWhat it is: CVE-2026-123957 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-2026-123957 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-2026-123957/ (Markdown: https://insights.sbomify.com/CVE-2026-123957/index.md)","id":"CVE-2026-123957","markdown":"https://insights.sbomify.com/CVE-2026-123957/index.md","name":"CVE-2026-123957","record":{"aliases":["GHSA-wxh7-x4wq-j3rp"],"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 determined in TOTOLINK CA300-PoE 6.2c.884. Impacted is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ipStart causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.","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 setIpQosRules buffer overflow","id":"CVE-2026-123957","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 setLanConfig buffer overflow","id":"CVE-2026-123958"},"nickname":null,"packages":[],"prev":{"headline":"OpenBMB Internet of Agents Message app.py fetch_chat_record access control","id":"CVE-2026-123881"},"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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-11-09","vendors":["TOTOLINK"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123957/"}