Public vulnerability disclosure

CVE-2026-80335

Out-of-bounds Write in Bootloader

publishedCWE-787

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.

Technical severity8.4 highCVSS 3.1 · CNA: Unisoc
Published2026-11-04Source updated 2026-11-04
Collected2026-11-043 attributed sources

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
Bootloader
Unisoc (Shanghai) Technologies Co., Ltd.
SC9863A (affected)
SC9832E (affected)
SC7731E (affected)
T310 (affected)
T610 (affected)
T618 (affected)
T7200 (affected)
T7225 (affected)
T7250 (affected)
T7255 (affected)
T7280 (affected)
T8100 (affected)
T9100 (affected)
T8200 (affected)
T7300 (affected)
T8300 (affected)
Other versions: unaffected
CNA: Unisoc

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 8.4
high
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HCNA: Unisoc
3.1 / 7.6
high
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HNVD: [email protected]

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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