Is there a public exploit for CVE-2026-80335?

No public exploit for CVE-2026-80335 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-80335?

CVE-2026-80335 scores CVSS 8.4 (v3.1), rated high.

What does CVE-2026-80335 affect?

CVE-2026-80335 affects Unisoc (Shanghai) Technologies Co., Ltd. Bootloader.

8.4 High

In the bootloader download module, there is a possible out-of-bounds write due to a failure to reset a global offset variable during…

CVE-2026-80335

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.

Assessment

CVSS: 8.4 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 November 2026
Last updated: 4 November 2026
Affected: Unisoc (Shanghai) Technologies Co., Ltd. · Bootloader
Assigner: Unisoc

CVSS vectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

https://www.unisoc.com/en/support/product-security-bulletin/2117818023857520641

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