CVE-2026-20449: Buffer Overflow
Published May 4, 2026
·Updated
In Modem, there is a possible system crash due to a heap buffer overflow. 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: MOLY01760138; Issue ID: MSV-6148.
Affected Software
137 affected components
Modem
All of the following
MediaTek Mt6763 Firmware
MediaTek Mt6763
All of the following
MediaTek Mt6765 Firmware
MediaTek Mt6765
All of the following
MediaTek Mt6767 Firmware
MediaTek Mt6767
All of the following
MediaTek Mt6768 Firmware
MediaTek Mt6768
All of the following
MediaTek Mt6769 Firmware
MediaTek Mt6769
All of the following
MediaTek Mt6771 Firmware
MediaTek Mt6771
All of the following
MediaTek Mt6779 Firmware
MediaTek Mt6779
All of the following
MediaTek Mt6781 Firmware
MediaTek Mt6781
All of the following
MediaTek Mt6783 Firmware
MediaTek Mt6783
All of the following
MediaTek Mt6785 Firmware
MediaTek Mt6785
All of the following
MediaTek Mt6789 Firmware
MediaTek Mt6789
All of the following
MediaTek Mt6813 Firmware
MediaTek Mt6813
All of the following
MediaTek Mt6815 Firmware
MediaTek Mt6815
All of the following
MediaTek Mt6833 Firmware
MediaTek Mt6833
All of the following
MediaTek Mt6835 Firmware
MediaTek Mt6835
All of the following
MediaTek Mt6853 Firmware
MediaTek Mt6853
All of the following
MediaTek Mt6855 Firmware
MediaTek Mt6855
All of the following
MediaTek Mt6858 Firmware
MediaTek Mt6858
All of the following
MediaTek Mt6873 Firmware
MediaTek Mt6873
All of the following
MediaTek Mt6875 Firmware
MediaTek Mt6875
All of the following
MediaTek Mt6877 Firmware
MediaTek Mt6877
All of the following
MediaTek Mt6878 Firmware
MediaTek Mt6878
All of the following
MediaTek Mt6879 Firmware
MediaTek Mt6879
All of the following
MediaTek Mt6880 Firmware
MediaTek Mt6880
All of the following
MediaTek Mt6883 Firmware
MediaTek Mt6883
All of the following
MediaTek Mt6885 Firmware
MediaTek Mt6885
All of the following
MediaTek Mt6886 Firmware
MediaTek Mt6886
All of the following
MediaTek Mt6889 Firmware
MediaTek Mt6889
All of the following
MediaTek Mt6890 Firmware
MediaTek Mt6890
All of the following
MediaTek Mt6891 Firmware
MediaTek Mt6891
All of the following
MediaTek Mt6893 Firmware
MediaTek Mt6893
All of the following
MediaTek Mt6895 Firmware
MediaTek Mt6895
All of the following
MediaTek Mt6896 Firmware
MediaTek Mt6896
All of the following
MediaTek Mt6897 Firmware
MediaTek Mt6897
All of the following
MediaTek Mt6899 Firmware
MediaTek Mt6899
All of the following
MediaTek Mt6980 Firmware
MediaTek Mt6980
All of the following
MediaTek Mt6983 Firmware
MediaTek Mt6983
All of the following
MediaTek Mt6985 Firmware
MediaTek Mt6985
All of the following
MediaTek Mt6986d Firmware
MediaTek Mt6986d
All of the following
MediaTek Mt6988 Firmware
MediaTek Mt6988
All of the following
MediaTek Mt2735 Firmware
MediaTek Mt2735
All of the following
MediaTek Mt2737 Firmware
MediaTek Mt2737
All of the following
MediaTek Mt6739 Firmware
MediaTek Mt6739
All of the following
MediaTek Mt6761 Firmware
MediaTek Mt6761
All of the following
MediaTek Mt6762 Firmware
MediaTek Mt6762
All of the following
MediaTek Mt6989 Firmware
MediaTek Mt6989
All of the following
MediaTek Mt6990 Firmware
MediaTek Mt6990
All of the following
MediaTek Mt6991 Firmware
MediaTek Mt6991
All of the following
MediaTek Mt6993 Firmware
MediaTek Mt6993
All of the following
MediaTek Mt8668 Firmware
MediaTek Mt8668
All of the following
MediaTek Mt8673 Firmware
MediaTek Mt8673
All of the following
MediaTek Mt8675 Firmware
MediaTek Mt8675
All of the following
MediaTek Mt8676 Firmware
MediaTek Mt8676
All of the following
MediaTek Mt8678 Firmware
MediaTek Mt8678
All of the following
MediaTek Mt8755 Firmware
MediaTek Mt8755
All of the following
MediaTek Mt8771 Firmware
MediaTek Mt8771
All of the following
MediaTek Mt8775 Firmware
MediaTek Mt8775
All of the following
MediaTek Mt8791 Firmware
MediaTek Mt8791
All of the following
MediaTek Mt8791t Firmware
MediaTek Mt8791t
All of the following
MediaTek Mt8792 Firmware
MediaTek Mt8792
All of the following
MediaTek Mt8793 Firmware
MediaTek Mt8793
All of the following
MediaTek Mt8795t Firmware
MediaTek Mt8795t
All of the following
MediaTek Mt8797 Firmware
MediaTek Mt8797
All of the following
MediaTek Mt8798 Firmware
MediaTek Mt8798
All of the following
MediaTek Mt8863 Firmware
MediaTek Mt8863
All of the following
MediaTek Mt8873 Firmware
MediaTek Mt8873
All of the following
MediaTek Mt8883 Firmware
MediaTek Mt8883
All of the following
MediaTek Mt8893 Firmware
MediaTek Mt8893
Event History
May 4, 2026
CVE Published
via MITRE·05:41 AM
Data Sourced
via MITRE·05:41 AM
DescriptionWeakness
Data Sourced
via NVD·07:15 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-20449?
CVE-2026-20449 is considered a critical vulnerability due to its potential to cause a system crash and remote denial of service.
2
How do I fix CVE-2026-20449?
To fix CVE-2026-20449, ensure that you apply the latest security patch provided by your modem's manufacturer.
3
What are the consequences of exploiting CVE-2026-20449?
Exploiting CVE-2026-20449 can lead to a remote denial of service, causing affected systems to crash when connected to a rogue base station.
4
Is user interaction required to exploit CVE-2026-20449?
No, user interaction is not required for the exploitation of CVE-2026-20449, making it particularly dangerous.
5
What type of devices are affected by CVE-2026-20449?
CVE-2026-20449 affects devices utilizing the Modem software, specifically those connecting to rogue base stations.