VDB
CVE-2026-80335
CVE-2026-80335
PUBLISHED
CVSS 8.4 HIGH
Out-of-bounds Write in Bootloader
Reported by unisoc · Published November 4, 2026
In the bootloader download module, there is a possible out-of-bounds write due to a failure to reset a global offset variable during firmware update sessions. This could lead to heap memory corruption, system crash, or potential arbitrary code execution with no additional execution privileges needed.
Risk scores
CVSS 3.1
8.4
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Unisoc (Shanghai) Technologies Co., Ltd. | Bootloader | SC9863A, SC9832E, SC7731E |
| Unisoc (Shanghai) Technologies Co., Ltd. | Bootloader | * |
Timeline
- Nov 4, 2026 EPSS Score
- Nov 4, 2026 Coalition ESS Score
- Nov 4, 2026 CVE Published
- Nov 5, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-80335
vulnetix vdb fixes CVE-2026-80335Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-80335/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart