🛡️ CVE-2026-20463

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Local — a local account, shell or session on the host is needed.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: High — administrative rights are needed first.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-20463 is classified as CWE-280: Improper Handling of Insufficient Permissions or Privileges. The product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. This may cause it to follow unexpected code paths that may leave the product in an invalid state.

Affected software

CVE-2026-20463 is recorded against 1 package.

• unknown

Timeline and source

Published on 1 July 2026 and last revised on 2 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

corp.mediatek.com

Other advisories for this package

unknown has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2022-4995 (9.8 Critical, published 7 Aug 2026)
• CVE-2022-4994 (published 30 Jul 2026)
• CVE-2023-49900 (9.8 Critical, published 16 Jul 2026)
• CVE-2023-49899 (9.8 Critical, published 16 Jul 2026)
• CVE-2022-4990 (published 3 Jul 2026)
• CVE-2022-4989 (published 3 Jul 2026)
• CVE-2022-50973 (9.8 Critical, published 2 Jul 2026)
• CVE-2023-20540 (published 26 Jun 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-280: Improper Handling of Insufficient Permissions or Privileges) in other software:

• CVE-2026-58416 (7.1 High, published 13 Aug 2026)
• CVE-2026-11804 (5.2 Medium, published 23 Jul 2026)
• CVE-2026-62393 (4.3 Medium, published 14 Jul 2026)
• CVE-2026-45196 (7.8 High, published 10 Jul 2026)
• CVE-2026-54262 (4.3 Medium, published 1 Jul 2026)
• CVE-2026-54261 (6.5 Medium, published 1 Jul 2026)
• CVE-2026-54259 (4.3 Medium, published 1 Jul 2026)
• CVE-2026-45195 (7.8 High, published 26 Jun 2026)

Details

Affected Packages

References