CVE Explorer

CVE-2026-40003

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:428be7c02cd77fa77f88254de303a54151acf43c3ee606352209a2f0832f46fc

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"ZX297520V3 BootROM","vendor":"ZTE","versions":[{"status":"affected","version":"7520V3 chip"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:46afb37662131c47f183c3ead99035a13c289da27de1567409e7ea51fedbca10 · sha256:617723e3c69d0c91… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"PHYSICAL","availabilityImpact":"LOW","baseScore":5.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:46afb37662131c47f183c3ead99035a13c289da27de1567409e7ea51fedbca10 · sha256:617723e3c69d0c91… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds write","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:46afb37662131c47f183c3ead99035a13c289da27de1567409e7ea51fedbca10 · sha256:617723e3c69d0c91… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"url":"https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/2144487415169560645"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:46afb37662131c47f183c3ead99035a13c289da27de1567409e7ea51fedbca10 · sha256:617723e3c69d0c91… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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