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Mediatek Chipset CVE-2026-20597

| EUVDEUVD-2026-115057
Out-of-bounds Read (CWE-125)
2026-11-02 MediaTek GHSA-3gr6-wpqr-g6x5
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Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK

1 technique across 1 tactic: Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: No CVSS yet + dangerous CWE (RCE/injection/auth-bypass class).
No patch listed yet

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AnalysisCVE.org

In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01758223; Issue ID: MSV-8909.

Affected VersionsENISA

MediaTek chipset MT2737
MediaTek chipset MT6897
MediaTek chipset MT8873
MediaTek chipset MT6761
MediaTek chipset MT6985
MediaTek chipset MT6889
MediaTek chipset MT6858
MediaTek chipset MT6767
MediaTek chipset MT6739
MediaTek chipset MT6989
MediaTek chipset MT6891
MediaTek chipset MT6768
MediaTek chipset MT6853
MediaTek chipset MT8771
MediaTek chipset MT8796
MediaTek chipset MT6855
MediaTek chipset MT8668
MediaTek chipset MT6762
MediaTek chipset MT8893
MediaTek chipset MT6991
MediaTek chipset MT6878
MediaTek chipset MT6875
MediaTek chipset MT8768
MediaTek chipset MT6881
MediaTek chipset MT6873
MediaTek chipset MT6983
MediaTek chipset MT6899
MediaTek chipset MT8788E
MediaTek chipset MT6890
MediaTek chipset MT8765
MediaTek chipset MT6993
MediaTek chipset MT8863
MediaTek chipset MT6885
MediaTek chipset MT6879
MediaTek chipset MT6835
MediaTek chipset MT6880
MediaTek chipset MT6877
MediaTek chipset MT6896
MediaTek chipset MT6990
MediaTek chipset MT6769
MediaTek chipset MT6980
MediaTek chipset MT8875
MediaTek chipset MT8791T
MediaTek chipset MT8793
MediaTek chipset MT6988
MediaTek chipset MT8775
MediaTek chipset MT6781
MediaTek chipset MT8786
MediaTek chipset MT6771
MediaTek chipset MT6893
MediaTek chipset MT2735
MediaTek chipset MT8791
MediaTek chipset MT8676
MediaTek chipset MT6763
MediaTek chipset MT6886
MediaTek chipset MT6779
MediaTek chipset MT6785
MediaTek chipset MT8792
MediaTek chipset MT8766R
MediaTek chipset MT6986
MediaTek chipset MT6833
MediaTek chipset MT6883
MediaTek chipset MT2716
MediaTek chipset MT8755
MediaTek chipset MT8798
MediaTek chipset MT6783
MediaTek chipset MT8678
MediaTek chipset MT6982
MediaTek chipset MT8781
MediaTek chipset MT6789
MediaTek chipset MT8797
MediaTek chipset MT6895
MediaTek chipset MT8883
MediaTek chipset MT8766
MediaTek chipset MT6815
MediaTek chipset MT6813
MediaTek chipset MT6765

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Threat Intelligence Overview

Social Media
1
Sightings
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity Not scored yet
CISA KEV No
Public POC No
EPSS N/A
Patch available No
Active threat No
Deciding rule
No CVSS yet + dangerous CWE (RCE/injection/auth-bypass class)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

CVE-2026-20433 HIGH
8.8 Apr 07

Out-of-bounds write in MediaTek modem firmware enables remote privilege escalation when devices connect to attacker-cont

CVE-2026-20501 HIGH
8.4 Sep 07

Heap buffer overflow in the vdec (video decoder) kernel driver across 53+ MediaTek SoCs allows a local unprivileged atta

CVE-2026-20502 HIGH
8.4 Sep 07

Local privilege escalation in MediaTek's vdec (video decoder) kernel driver affects more than 53 distinct chipset varian

CVE-2026-20465 HIGH
8.1 Aug 03

Heap-based buffer overflow in the MediaTek WLAN AP driver enables an adjacent-network attacker to escalate privileges wi

CVE-2026-20432 HIGH
8.0 Apr 07

Out-of-bounds write in MediaTek modem chipset implementations allows remote privilege escalation when user equipment con

CVE-2026-20452 HIGH
8.0 Jun 01

Heap buffer overflow in the MediaTek WLAN access point driver allows adjacent-network attackers with low-privilege user

CVE-2026-20495 HIGH
7.8 Aug 03

Local privilege escalation in MediaTek's Bluetooth driver affects six Wi-Fi/Bluetooth combo chipsets (MT7902, MT7920, MT

CVE-2026-20455 HIGH
7.8 Jun 01

Local privilege escalation in MediaTek GenieZone (trusted execution environment) allows an attacker who has already gain

CVE-2026-20483 HIGH
7.7 Aug 03

Privilege escalation in MediaTek's Android Telephony component enables any locally-installed application - regardless of

CVE-2026-20479 HIGH
7.5 Aug 03

Out-of-bounds read in MediaTek modem firmware across 19 chipsets enables remote denial of service when a User Equipment

CVE-2026-20458 HIGH
7.5 Jul 01

Remote privilege escalation in the baseband modem firmware of dozens of MediaTek chipsets allows an attacker operating a

CVE-2026-20510 MEDIUM
6.7 Sep 07

Privilege escalation via a double-free memory corruption bug in camera middleware affects 17 MediaTek chipset variants,

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