Is there a public exploit for CVE-2026-20551?

No public exploit for CVE-2026-20551 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-2026-20551?

CVE-2026-20551 scores CVSS 5.5 (v3.1), rated medium.

What does CVE-2026-20551 affect?

CVE-2026-20551 affects MediaTek, Inc. MediaTek chipset.

5.5 Medium

In gnss, there is a possible out of bounds write due to a missing bounds check.

CVE-2026-20551

In gnss, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11309305; Issue ID: MSV-10730.

Assessment

CVSS: 5.5 (v3.1)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 2 November 2026
Last updated: 2 November 2026
Affected: MediaTek, Inc. · MediaTek chipset
Assigner: MediaTek

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

At the source

EUVD (ENISA)

References

https://www.mediatek.com/product-security-bulletin/November-2026

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