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TI-2026-83705 Aliases CVE-2026-20564GHSA-9mrg-c8wx-5r96

Out-of-bounds write in MediaTek modem leads to local DoS

Priority LOW 26CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

An incorrect bounds check in the MediaTek modem allows an out-of-bounds write (CWE-787). Affected MediaTek chipsets include MT2716, MT2735, MT2737, MT6739, MT6761 and other models. A local attacker needs no additional privileges and no user interaction to cause a local denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

In Modem, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01780439; Issue ID: MSV-8901.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00123 2nd 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
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MediaTekMediaTek chipsetMT2716; MT2735; MT2737; MT6739; MT6761; MT6762; MT6763; MT6765; MT6767; MT6768; MT6769; MT6771; MT6779; MT6781; MT6783; MT6785; MT6789; MT6813; MT6815; MT6833; MT6835; MT6853; MT6855; MT6858; MT6873; MT6875; MT6877; MT6878; MT6879; MT6880; MT6881; MT6883; MT6885; MT6886; MT6889; MT6890; MT6891; MT6893; MT6895; MT6896; MT6897; MT6899; MT6980; MT6982; MT6983; MT6985; MT6986; MT6988; MT6989; MT6990; MT6991; MT6993; MT8668; MT8676; MT8678; MT8755; MT8765; MT8766; MT8766R; MT8768; MT8771; MT8775; MT8781; MT8786; MT8788E; MT8791; MT8791T; MT8792; MT8793; MT8796; MT8797; MT8798; MT8863; MT8873; MT8875; MT8883; MT8893—No fix listedCNA
  • MediaTek chipset VendorMediaTek Affected MT2716; MT2735; MT2737; MT6739; MT6761; MT6762; MT6763; MT6765; MT6767; MT6768; MT6769; MT6771; MT6779; MT6781; MT6783; MT6785; MT6789; MT6813; MT6815; MT6833; MT6835; MT6853; MT6855; MT6858; MT6873; MT6875; MT6877; MT6878; MT6879; MT6880; MT6881; MT6883; MT6885; MT6886; MT6889; MT6890; MT6891; MT6893; MT6895; MT6896; MT6897; MT6899; MT6980; MT6982; MT6983; MT6985; MT6986; MT6988; MT6989; MT6990; MT6991; MT6993; MT8668; MT8676; MT8678; MT8755; MT8765; MT8766; MT8766R; MT8768; MT8771; MT8775; MT8781; MT8786; MT8788E; MT8791; MT8791T; MT8792; MT8793; MT8796; MT8797; MT8798; MT8863; MT8873; MT8875; MT8883; MT8893 Fixed in — No fix listed CNA

Remediation

No fixed version is listed for the MediaTek chipset.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-20564
  2. 2026-11-02 Alias added: GHSA-9mrg-c8wx-5r96
  3. 2026-11-02 CVSS score added · CISA ADP
  4. 2026-11-02 CISA SSVC decision points changed

References

Other 1

  • TI-2020-00067 Out-of-bounds write in Android KEVCVSS 3.1HIGH 7.8
  • TI-2024-13053 Improper input validation in MediaTek MT6890, MT7915, MT7916, MT7981, MT7986 CVSS 3.1CRITICAL 9.8
  • TI-2025-14725 Integer overflow in MediaTek MT6781, MT6789, MT6835, MT6855, MT6878, MT6879, MT6886… CVSS 3.1MEDIUM 6.5
  • TI-2024-13114 Memory corruption in MediaTek MT2735, MT2737, MT6833, MT6835, MT6835T, MT6853, MT6855… CVSS 3.1CRITICAL 9.8
  • TI-2022-14283 Command injection in MediaTek EN7528, EN7580 CVSS 3.1CRITICAL 9.8
  • TI-2021-11684 Command injection in MediaTek EN7528, EN7580 CVSS 3.1CRITICAL 9.8
See all 1133 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences