CVE-2026-40003USB-based arbitrary memory write vulnerability in ZTE ZX297520V3 soc BootROM
Updated under an hour ago ()
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It affects ZTE ZX297520V3 BootROM and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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ZTE ZX297520V3 BootROM contains a vulnerability that allows arbitrary memory writes via USB. Attackers can exploit the lack of target address validation in the USB download mode to write data to any location in BootROM runtime memory, thereby overwriting the stack, hijacking the execution flow, bypassing the Secure Boot signature verification mechanism, and achieving unauthorized code execution.
- CVSS
- 5.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- zte
- NVD analysis
- Analyzed
- Record last updated
- May 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.