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CVE-2026-20434

HIGH CVSS 3.1: 7.5 EPSS 0.07%
Updated Mar 02, 2026
Mediatek
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-787 (Out-of-bounds Write)
Vendor Mediatek
Public PoC No

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.

Attack Parameters

Attack Vector
Adjacent
Requires local network access
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 99

Configuration From (including) Up to (excluding)
Mediatek Lr12a
cpe:2.3:o:mediatek:lr12a:-:*:*:*:*:*:*:*
Mediatek Lr13
cpe:2.3:o:mediatek:lr13:-:*:*:*:*:*:*:*
Mediatek Nr15
cpe:2.3:o:mediatek:nr15:-:*:*:*:*:*:*:*
Mediatek Nr16
cpe:2.3:o:mediatek:nr16:-:*:*:*:*:*:*:*
Mediatek Nr17
cpe:2.3:o:mediatek:nr17:-:*:*:*:*:*:*:*
Mediatek Mt2735
cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*
Mediatek Mt2737
cpe:2.3:h:mediatek:mt2737:-:*:*:*:*:*:*:*
Mediatek Mt6739
cpe:2.3:h:mediatek:mt6739:-:*:*:*:*:*:*:*
Mediatek Mt6761
cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:*
Mediatek Mt6762
cpe:2.3:h:mediatek:mt6762:-:*:*:*:*:*:*:*
Mediatek Mt6762d
cpe:2.3:h:mediatek:mt6762d:-:*:*:*:*:*:*:*
Mediatek Mt6762m
cpe:2.3:h:mediatek:mt6762m:-:*:*:*:*:*:*:*
Mediatek Mt6763
cpe:2.3:h:mediatek:mt6763:-:*:*:*:*:*:*:*
Mediatek Mt6765
cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:*
Mediatek Mt6765t
cpe:2.3:h:mediatek:mt6765t:-:*:*:*:*:*:*:*
Mediatek Mt6767
cpe:2.3:h:mediatek:mt6767:-:*:*:*:*:*:*:*
Mediatek Mt6768
cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*
Mediatek Mt6769
cpe:2.3:h:mediatek:mt6769:-:*:*:*:*:*:*:*
Mediatek Mt6769k
cpe:2.3:h:mediatek:mt6769k:-:*:*:*:*:*:*:*
Mediatek Mt6769s
cpe:2.3:h:mediatek:mt6769s:-:*:*:*:*:*:*:*
Mediatek Mt6769t
cpe:2.3:h:mediatek:mt6769t:-:*:*:*:*:*:*:*
Mediatek Mt6769z
cpe:2.3:h:mediatek:mt6769z:-:*:*:*:*:*:*:*
Mediatek Mt6771
cpe:2.3:h:mediatek:mt6771:-:*:*:*:*:*:*:*
Mediatek Mt6779
cpe:2.3:h:mediatek:mt6779:-:*:*:*:*:*:*:*
Mediatek Mt6781
cpe:2.3:h:mediatek:mt6781:-:*:*:*:*:*:*:*
Mediatek Mt6783
cpe:2.3:h:mediatek:mt6783:-:*:*:*:*:*:*:*
Mediatek Mt6785
cpe:2.3:h:mediatek:mt6785:-:*:*:*:*:*:*:*
Mediatek Mt6785t
cpe:2.3:h:mediatek:mt6785t:-:*:*:*:*:*:*:*
Mediatek Mt6785u
cpe:2.3:h:mediatek:mt6785u:-:*:*:*:*:*:*:*
Mediatek Mt6789
cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*
Mediatek Mt6833
cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*
Mediatek Mt6833p
cpe:2.3:h:mediatek:mt6833p:-:*:*:*:*:*:*:*
Mediatek Mt6835
cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:*
Mediatek Mt6835t
cpe:2.3:h:mediatek:mt6835t:-:*:*:*:*:*:*:*
Mediatek Mt6853
cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*
Mediatek Mt6853t
cpe:2.3:h:mediatek:mt6853t:-:*:*:*:*:*:*:*
Mediatek Mt6855
cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*
Mediatek Mt6855t
cpe:2.3:h:mediatek:mt6855t:-:*:*:*:*:*:*:*
Mediatek Mt6873
cpe:2.3:h:mediatek:mt6873:-:*:*:*:*:*:*:*
Mediatek Mt6875
cpe:2.3:h:mediatek:mt6875:-:*:*:*:*:*:*:*
Mediatek Mt6875t
cpe:2.3:h:mediatek:mt6875t:-:*:*:*:*:*:*:*
Mediatek Mt6877
cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*
Mediatek Mt6877t
cpe:2.3:h:mediatek:mt6877t:-:*:*:*:*:*:*:*
Mediatek Mt6877tt
cpe:2.3:h:mediatek:mt6877tt:-:*:*:*:*:*:*:*
Mediatek Mt6878
cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:*
Mediatek Mt6878m
cpe:2.3:h:mediatek:mt6878m:-:*:*:*:*:*:*:*
Mediatek Mt6879
cpe:2.3:h:mediatek:mt6879:-:*:*:*:*:*:*:*
Mediatek Mt6880
cpe:2.3:h:mediatek:mt6880:-:*:*:*:*:*:*:*
Mediatek Mt6883
cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*
Mediatek Mt6885
cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*
Mediatek Mt6886
cpe:2.3:h:mediatek:mt6886:-:*:*:*:*:*:*:*
Mediatek Mt6889
cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*
Mediatek Mt6890
cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*
Mediatek Mt6891
cpe:2.3:h:mediatek:mt6891:-:*:*:*:*:*:*:*
Mediatek Mt6893
cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*
Mediatek Mt6895
cpe:2.3:h:mediatek:mt6895:-:*:*:*:*:*:*:*
Mediatek Mt6895tt
cpe:2.3:h:mediatek:mt6895tt:-:*:*:*:*:*:*:*
Mediatek Mt6896
cpe:2.3:h:mediatek:mt6896:-:*:*:*:*:*:*:*
Mediatek Mt6897
cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:*
Mediatek Mt6899
cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*
Mediatek Mt6980
cpe:2.3:h:mediatek:mt6980:-:*:*:*:*:*:*:*
Mediatek Mt6980d
cpe:2.3:h:mediatek:mt6980d:-:*:*:*:*:*:*:*
Mediatek Mt6983
cpe:2.3:h:mediatek:mt6983:-:*:*:*:*:*:*:*
Mediatek Mt6983t
cpe:2.3:h:mediatek:mt6983t:-:*:*:*:*:*:*:*
Mediatek Mt6985
cpe:2.3:h:mediatek:mt6985:-:*:*:*:*:*:*:*
Mediatek Mt6985t
cpe:2.3:h:mediatek:mt6985t:-:*:*:*:*:*:*:*
Mediatek Mt6989
cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:*
Mediatek Mt6989t
cpe:2.3:h:mediatek:mt6989t:-:*:*:*:*:*:*:*
Mediatek Mt6990
cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:*
Mediatek Mt6991
cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*
Mediatek Mt8666
cpe:2.3:h:mediatek:mt8666:-:*:*:*:*:*:*:*
Mediatek Mt8667
cpe:2.3:h:mediatek:mt8667:-:*:*:*:*:*:*:*
Mediatek Mt8668
cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:*
Mediatek Mt8673
cpe:2.3:h:mediatek:mt8673:-:*:*:*:*:*:*:*
Mediatek Mt8675
cpe:2.3:h:mediatek:mt8675:-:*:*:*:*:*:*:*
Mediatek Mt8676
cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*
Mediatek Mt8678
cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*
Mediatek Mt8755
cpe:2.3:h:mediatek:mt8755:-:*:*:*:*:*:*:*
Mediatek Mt8765
cpe:2.3:h:mediatek:mt8765:-:*:*:*:*:*:*:*
Mediatek Mt8766
cpe:2.3:h:mediatek:mt8766:-:*:*:*:*:*:*:*
Mediatek Mt8766r
cpe:2.3:h:mediatek:mt8766r:-:*:*:*:*:*:*:*
Mediatek Mt8768
cpe:2.3:h:mediatek:mt8768:-:*:*:*:*:*:*:*
Mediatek Mt8771
cpe:2.3:h:mediatek:mt8771:-:*:*:*:*:*:*:*
Mediatek Mt8781
cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*
Mediatek Mt8786
cpe:2.3:h:mediatek:mt8786:-:*:*:*:*:*:*:*
Mediatek Mt8788
cpe:2.3:h:mediatek:mt8788:-:*:*:*:*:*:*:*
Mediatek Mt8788e
cpe:2.3:h:mediatek:mt8788e:-:*:*:*:*:*:*:*
Mediatek Mt8789
cpe:2.3:h:mediatek:mt8789:-:*:*:*:*:*:*:*
Mediatek Mt8791
cpe:2.3:h:mediatek:mt8791:-:*:*:*:*:*:*:*
Mediatek Mt8791t
cpe:2.3:h:mediatek:mt8791t:-:*:*:*:*:*:*:*
Mediatek Mt8792
cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*
Mediatek Mt8793
cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*
Mediatek Mt8795t
cpe:2.3:h:mediatek:mt8795t:-:*:*:*:*:*:*:*
Mediatek Mt8797
cpe:2.3:h:mediatek:mt8797:-:*:*:*:*:*:*:*
Mediatek Mt8798
cpe:2.3:h:mediatek:mt8798:-:*:*:*:*:*:*:*
Mediatek Mt8863
cpe:2.3:h:mediatek:mt8863:-:*:*:*:*:*:*:*
Mediatek Mt8873
cpe:2.3:h:mediatek:mt8873:-:*:*:*:*:*:*:*
Mediatek Mt8883
cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:*
Mediatek Mt8893
cpe:2.3:h:mediatek:mt8893:-:*:*:*:*:*:*:*