# CVE-2026-20473: MediaTek display memory corruption use-after-free Source: https://junglewise.ai/threats/cve-2026-20473-mediatek-display-memory-corruption-use-after-free Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Published: 2026-08-03. Updated: 2026-09-25 License: CC BY 4.0 with a link back CVE-2026-20473 · Severity: medium · CVSS 6 · Published 2026-08-03 MediaTek chipsets include display processing components that render graphics on smartphones, tablets, and other devices. A memory corruption vulnerability in the display driver could allow an attacker who has already gained system-level access to escalate privileges or crash the device, affecting the reliability and security of the affected systems. Technologies: [MediaTek Mt6991](https://junglewise.ai/threats/technologies/mt6991), [MediaTek Mt6991 Firmware](https://junglewise.ai/threats/technologies/mt6991-firmware), [MediaTek MT6993](https://junglewise.ai/threats/technologies/mt6993), [MediaTek Mt6993 Firmware](https://junglewise.ai/threats/technologies/mt6993-firmware), [MediaTek Mt8126](https://junglewise.ai/threats/technologies/mt8126), [MediaTek Mt8126 Firmware](https://junglewise.ai/threats/technologies/mt8126-firmware), [MediaTek Mt8171](https://junglewise.ai/threats/technologies/mt8171), [MediaTek Mt8171 Firmware](https://junglewise.ai/threats/technologies/mt8171-firmware), [MediaTek Mt8188](https://junglewise.ai/threats/technologies/mt8188), [MediaTek Mt8188 Firmware](https://junglewise.ai/threats/technologies/mt8188-firmware), [MediaTek Mt8189](https://junglewise.ai/threats/technologies/mt8189), [MediaTek Mt8189 Firmware](https://junglewise.ai/threats/technologies/mt8189-firmware), [MediaTek Mt8367](https://junglewise.ai/threats/technologies/mt8367), [MediaTek Mt8367 Firmware](https://junglewise.ai/threats/technologies/mt8367-firmware), [MediaTek Mt8668](https://junglewise.ai/threats/technologies/mt8668), [MediaTek Mt8668 Firmware](https://junglewise.ai/threats/technologies/mt8668-firmware), [MediaTek MT8676](https://junglewise.ai/threats/technologies/mt8676), [MediaTek Mt8676 Firmware](https://junglewise.ai/threats/technologies/mt8676-firmware), [MediaTek MT8678](https://junglewise.ai/threats/technologies/mt8678), [MediaTek Mt8678 Firmware](https://junglewise.ai/threats/technologies/mt8678-firmware), [MediaTek Mt8766](https://junglewise.ai/threats/technologies/mt8766), [MediaTek Mt8766 Firmware](https://junglewise.ai/threats/technologies/mt8766-firmware), [MediaTek Mt8768](https://junglewise.ai/threats/technologies/mt8768), [MediaTek Mt8768 Firmware](https://junglewise.ai/threats/technologies/mt8768-firmware), [MediaTek Mt8781](https://junglewise.ai/threats/technologies/mt8781), [MediaTek Mt8781 Firmware](https://junglewise.ai/threats/technologies/mt8781-firmware), [MediaTek Mt8786](https://junglewise.ai/threats/technologies/mt8786), [MediaTek Mt8786 Firmware](https://junglewise.ai/threats/technologies/mt8786-firmware), [MediaTek Mt8791t](https://junglewise.ai/threats/technologies/mt8791t), [MediaTek Mt8791t Firmware](https://junglewise.ai/threats/technologies/mt8791t-firmware), [MediaTek Mt8799](https://junglewise.ai/threats/technologies/mt8799), [MediaTek Mt8799 Firmware](https://junglewise.ai/threats/technologies/mt8799-firmware), [MediaTek Mt8910](https://junglewise.ai/threats/technologies/mt8910), [MediaTek Mt8910 Firmware](https://junglewise.ai/threats/technologies/mt8910-firmware). Vendors: [MediaTek](https://junglewise.ai/threats/vendors/mediatek). ## Quick answers **Is CVE-2026-20473 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-20473 being exploited in the wild. **How severe is CVE-2026-20473?** Medium severity, with a CVSS score of 6, published 3 August 2026. **Which products and versions are affected?** MediaTek Dimensity. **Is there a fix for CVE-2026-20473?** 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-2026-20473 attacked?** It is attacked with local access. **Am I affected by CVE-2026-20473?** Check whether you run MediaTek Dimensity, MediaTek Mt6991, MediaTek Mt6991 Firmware 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 This is a use-after-free memory corruption vulnerability in the display subcomponent of MediaTek chipsets. The root cause involves improper memory management leading to access of freed memory regions. Exploitation requires that an attacker has already obtained System privilege, meaning local access to the device. No user interaction is required once System privilege is obtained. Successful exploitation can lead to local privilege escalation. A patch is available as indicated by Patch ID ALPS11019722. ## Affected products - MediaTek Dimensity ## Timeline - 2026-08-03: disclosed ## References - [https://www.mediatek.com/product-security-bulletin/August-2026](https://www.mediatek.com/product-security-bulletin/August-2026) ## Related threats - [MediaTek apusys memory corruption via use-after-free](https://junglewise.ai/threats/cve-2026-20542-in-apusys-there-is-a-possible-memory-corruption-due-to-use-after) - [MediaTek GPU use after free leading to system crash](https://junglewise.ai/threats/cve-2026-20515-mediatek-gpu-use-after-free-leading-to-system-crash) - [MediaTek Modem denial of service due to missing bounds check](https://junglewise.ai/threats/cve-2026-20504-mediatek-modem-denial-of-service-due-to-missing-bounds-check) - [MediaTek Modem system crash due to missing bounds check](https://junglewise.ai/threats/cve-2026-20503-mediatek-modem-system-crash-due-to-missing-bounds-check) - [MediaTek vdec out of bounds write](https://junglewise.ai/threats/cve-2026-20502-mediatek-vdec-out-of-bounds-write)