Quick answers
- Is CVE-2026-80335 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-80335 being exploited in the wild.
- How severe is CVE-2026-80335?
- High severity, with a CVSS score of 7.6, published 4 November 2026.
- Which products and versions are affected?
- Unisoc SC9863A; Unisoc SC9832E; Unisoc SC7731E; Unisoc T310; and 12 more.
- Is there a fix for CVE-2026-80335?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-80335 attacked?
- It is attacked with physical access, in device firmware.
- Am I affected by CVE-2026-80335?
- Check whether you run Unisoc Sc7731e, Unisoc Sc9832e, Unisoc Sc9863a or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A failure to reset a global offset variable in the bootloader download module causes an out-of-bounds write to heap memory during firmware update sessions (CWE-787). The vulnerability requires physical access to the device; a successful exploit results in heap corruption, denial of service, or code execution with bootloader-level privileges.
Affected products
- Unisoc SC9863A
- Unisoc SC9832E
- Unisoc SC7731E
- Unisoc T310
- Unisoc T610
- Unisoc T618
- Unisoc T7200
- Unisoc T7225
- Unisoc T7250
- Unisoc T7255
- Unisoc T7280
- Unisoc T8100
- Unisoc T9100
- Unisoc T8200
- Unisoc T7300
- Unisoc T8300
Timeline
- 2026-11-04: disclosed