VDB-355707 · CVE-2026-20432 · MSV-4461
MEDIATEK MT8893 BASE STATION OUT-OF-BOUNDS WRITE
HISTORYDIFFRELATEJSONXMLCTI
CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score
9.4 $0-$5k 1.74+
Summaryinfo
A vulnerability identified as critical has been detected in MediaTek MT2735, MT2737, MT6779, MT6781, MT6783, MT6785, MT6789, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6989, MT6990, MT6991, MT6993, MT8668, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8775, MT8781, MT8789, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883 and MT8893. Affected by this vulnerability is an unknown functionality of the component Base Station Handler. Performing a manipulation results in out-of-bounds write. This vulnerability is reported as CVE-2026-20432. The attack is possible to be carried out remotely. No exploit exists. To fix this issue, it is recommended to deploy a patch.
Detailsinfo
A vulnerability classified as very critical has been found in MediaTek MT2735, MT2737, MT6779, MT6781, MT6783, MT6785, MT6789, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6989, MT6990, MT6991, MT6993, MT8668, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8775, MT8781, MT8789, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883 and MT8893. This affects some unknown functionality of the component Base Station Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
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: MOLY01406170; Issue ID: MSV-4461.
It is possible to read the advisory at corp.mediatek.com. This vulnerability is uniquely identified as CVE-2026-20432 since 11/03/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/07/2026).
Applying the patch MSV-4461 is able to eliminate this problem.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-19566).
Productinfo
Type
Chip Software
Vendor
MediaTek
Name
MT2735
MT2737
MT6779
MT6781
MT6783
MT6785
MT6789
MT6813
MT6815
MT6833
MT6835
MT6853
MT6855
MT6873
MT6875
MT6877
MT6878
MT6879
MT6880
MT6883
MT6885
MT6886
MT6889
MT6890
MT6891
MT6893
MT6895
MT6896
MT6897
MT6899
MT6980
MT6983
MT6985
MT6989
MT6990
MT6991
MT6993
MT8668
MT8673
MT8675
MT8676
MT8678
MT8755
MT8771
MT8775
MT8781
MT8789
MT8791
MT8791T
MT8792
MT8793
MT8795T
MT8797
MT8798
MT8863
MT8873
MT8883
MT8893
License
commercial
CPE 2.3info
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CPE 2.2info
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CVSSv4info
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv3info
VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4
VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2info
Vector Complexity Authentication Confidentiality Integrity Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploitinginfo
Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
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Threat Intelligenceinfo
Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍
Countermeasuresinfo
Recommended: Patch
Status: 🔍
0-Day Time: 🔒
Patch: MSV-4461
Timelineinfo
11/03/2025 CVE reserved
04/07/2026 +154 days Advisory disclosed
04/07/2026 +0 days VulDB entry created
04/07/2026 +0 days VulDB entry last update
Sourcesinfo
Advisory: MSV-4461
Status: Confirmed
CVE: CVE-2026-20432 (🔒)
GCVE (CVE): GCVE-0-2026-20432
GCVE (VulDB): GCVE-100-355707
EUVD: 🔒
Entryinfo
Created: 04/07/2026 07:21
Updated: 04/07/2026 08:30
Changes: 04/07/2026 07:21 (56), 04/07/2026 08:30 (1)
Complete: 🔍
Cache ID: 99:C75:101
Discussion
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