Description

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY00782946; Issue ID: MSV-4135.

INFO

Published Date :

2026-03-02T08:39:10.077Z

Last Modified :

2026-03-03T04:55:58.368Z

Source :

MediaTek
AFFECTED PRODUCTS

The following products are affected by CVE-2026-20434 vulnerability.

Vendors Products
Mediatek
  • Lr12a
  • Lr13
  • Mt2735
  • Mt2737
  • Mt6739
  • Mt6761
  • Mt6762
  • Mt6762d
  • Mt6762m
  • Mt6763
  • Mt6765
  • Mt6765t
  • Mt6767
  • Mt6768
  • Mt6769
  • Mt6769k
  • Mt6769s
  • Mt6769t
  • Mt6769z
  • Mt6771
  • Mt6779
  • Mt6781
  • Mt6783
  • Mt6785
  • Mt6785t
  • Mt6785u
  • Mt6789
  • Mt6833
  • Mt6833p
  • Mt6835
  • Mt6835t
  • Mt6853
  • Mt6853t
  • Mt6855
  • Mt6855t
  • Mt6873
  • Mt6875
  • Mt6875t
  • Mt6877
  • Mt6877t
  • Mt6877tt
  • Mt6878
  • Mt6878m
  • Mt6879
  • Mt6880
  • Mt6883
  • Mt6885
  • Mt6886
  • Mt6889
  • Mt6890
  • Mt6891
  • Mt6893
  • Mt6895
  • Mt6895tt
  • Mt6896
  • Mt6897
  • Mt6899
  • Mt6980
  • Mt6980d
  • Mt6983
  • Mt6983t
  • Mt6985
  • Mt6985t
  • Mt6989
  • Mt6989t
  • Mt6990
  • Mt6991
  • Mt8666
  • Mt8667
  • Mt8668
  • Mt8673
  • Mt8675
  • Mt8676
  • Mt8678
  • Mt8755
  • Mt8765
  • Mt8766
  • Mt8766r
  • Mt8768
  • Mt8771
  • Mt8781
  • Mt8786
  • Mt8788
  • Mt8788e
  • Mt8789
  • Mt8791
  • Mt8791t
  • Mt8792
  • Mt8793
  • Mt8795t
  • Mt8797
  • Mt8798
  • Mt8863
  • Mt8873
  • Mt8883
  • Mt8893
  • Nr15
  • Nr16
  • Nr17
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-20434.

URL Resource
https://corp.mediatek.com/product-security-bulletin/March-2026 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact