CVE-2026-20433
In Modem, there is a possible out of bounds write due to a missing bounds check.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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: MOLY01088681; Issue ID: MSV-4460.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.34% probability · 27th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- mediatek/mt2735 firmware · mediatek/mt2737 firmware · mediatek/mt6813 firmware · mediatek/mt6833 firmware · mediatek/mt6833p firmware · mediatek/mt6835 firmware · mediatek/mt6835t firmware · mediatek/mt6853 firmware · mediatek/mt6853t firmware · mediatek/mt6855 firmware · mediatek/mt6855t firmware · mediatek/mt6873 firmware · mediatek/mt6875 firmware · mediatek/mt6875t firmware · mediatek/mt6877 firmware · mediatek/mt6877t firmware · mediatek/mt6877tt firmware · mediatek/mt6878 firmware · mediatek/mt6878m firmware · mediatek/mt6879 firmware · +40 more
- Source
- security@mediatek.com
EPSS 0.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.