CVE-2026-18269
CVE-2026-18269
Kenwood DNR1007XR tchdr_bytestream_read Out-Of-Bounds Write Code Execution Vulnerability. This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Kenwood DNR1007XR devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the tchdr_bytestream_read function. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-28980.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-26-486/ (x_research-advisory)
- www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html (vendor-advisory)
Frequently asked questions
- What is CVE-2026-18269?
- CVE-2026-18269 is a medium-severity vulnerability, classified under Out-of-bounds Write. CVSS score: 6.8/10. Published 2026-08-20.
- How severe is CVE-2026-18269?
- Medium severity. CVSS v3 base score is 6.8 out of 10.