Integer overflow in MediaTek display enables privilege escalation
Priority LOW 30CWE-190Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
MediaTek chipsets MT6739, MT6761, MT6765, MT6768, MT6781 and other models are affected. An integer overflow in the display component lets a malicious actor who has already obtained System privilege escalate privileges locally (CWE-190). No user interaction is needed for exploitation.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
In display, there is a possible escalation of privilege due to an integer overflow. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11296678; Issue ID: MSV-9167.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00109 1st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MediaTek | MediaTek chipset | MT6739; MT6761; MT6765; MT6768; MT6781; MT6789; MT6833; MT6835; MT6853; MT6855; MT6858; MT6877; MT6878; MT6879; MT6883; MT6885; MT6886; MT6889; MT6893; MT6895; MT6897; MT6899; MT6983; MT6985; MT6989; MT6991; MT6993; MT8171; MT8188; MT8668; MT8676; MT8678; MT8793 | — | No fix listed | CNA |
- MediaTek chipset VendorMediaTek Affected MT6739; MT6761; MT6765; MT6768; MT6781; MT6789; MT6833; MT6835; MT6853; MT6855; MT6858; MT6877; MT6878; MT6879; MT6883; MT6885; MT6886; MT6889; MT6893; MT6895; MT6897; MT6899; MT6983; MT6985; MT6989; MT6991; MT6993; MT8171; MT8188; MT8668; MT8676; MT8678; MT8793 Fixed in — No fix listed CNA
CPE configurations NVD · 66
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:mediatek:mt6739_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6739:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6761_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6781_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6781:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
- cpe:2.3:o:mediatek:mt6739_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6739:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6761_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6781_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6781:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
Show 56 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6833_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6835_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6853_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6855_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6858_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6858:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6878_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6879_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6879:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6883_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6885_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6886_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6886:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6889_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6893_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6895_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6895:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6897_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6983_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6983:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6985_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6985:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt8171_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt8171:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
- cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6833_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6835_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6853_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6855_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6858_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6858:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6878_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6879_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6879:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6883_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6885_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6886_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6886:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6889_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6893_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6895_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6895:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6897_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6983_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6983:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6985_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6985:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt8171_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt8171:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
Remediation
The sources list no fixed version for MediaTek chipset.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-05 Threatist record created from CVE-2026-20533
- 2026-10-05 Alias added: GHSA-g76f-499r-45cc
- 2026-10-06 CISA SSVC decision points changed
References
More MediaTek Mt6739 Firmware vulnerabilities
- TI-2026-16643 Heap-based buffer overflow in MediaTek chipset CVSS 3.1HIGH 8.4
- TI-2026-16642 Heap-based buffer overflow in MediaTek chipset CVSS 3.1HIGH 8.4
- TI-2026-16626 Missing authorization in MediaTek chipset CVSS 3.1HIGH 7.7
- TI-2026-16598 Out-of-bounds write in MediaTek chipset CVSS 3.1HIGH 7.8
- TI-2026-67589 Out-of-bounds write in MediaTek chipsets enables local escalation CVSS 3.1MEDIUM 6.8
- TI-2026-16596 Out-of-bounds write in MediaTek chipset CVSS 3.1MEDIUM 6.7
Sources
- CVE-2026-20533 · CVE Program
- CVE-2026-20533 · NVD
- FIRST EPSS
- GHSA-g76f-499r-45cc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences