{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-119756 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-119756 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-119756 is a critical vulnerability in arendst Tasmota, published on 9 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-119756 and fix it if it is affected.\n\nWhat it is: CVE-2026-119756 is a critical vulnerability in arendst Tasmota, published on 9 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-119756 in the wild and no public exploit code.\n\nAffected product: arendst Tasmota. 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-2026-119756/ (Markdown: https://insights.sbomify.com/CVE-2026-119756/index.md)","id":"CVE-2026-119756","markdown":"https://insights.sbomify.com/CVE-2026-119756/index.md","name":"CVE-2026-119756","record":{"aliases":["GHSA-6g2f-6p9p-vvm8"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-805","name":"Buffer Access with Incorrect Length Value"}],"description":"Tasmota through 16.0.0, fixed in commit e97e1e4, contains a heap out-of-bounds write vulnerability in SendReceiveDeviceGroupMessage() that allows unauthenticated attackers on the local network to corrupt heap memory by sending crafted Device Groups messages over UDP port 4447 that cause the log_remaining counter to go negative and writes to exceed the fixed 512-byte buffer. Attackers can exploit this flaw to crash the device or potentially achieve native code execution on ESP8266 and ESP32 platforms that lack ASLR and heap cookies.","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":"Tasmota 16.0.0 Heap Out-of-Bounds Write via Device Groups UDP","id":"CVE-2026-119756","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"BTCPay Server \u003c 2.4.2 LND Macaroon Credential File Disclosure","id":"CVE-2026-119757"},"nickname":null,"packages":[],"prev":{"headline":"Tasmota 16.0.0 CSRF via Referer Header Validation Bypass","id":"CVE-2026-119755"},"products":["Tasmota"],"published":"2026-11-09","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":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-11-09","vendors":["arendst"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-119756/"}