SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-20534

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.

MEDIUM 5.3EPSS 0.18%

Does this matter?

Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.

Description

In Modem, there is a possible out of bounds read due to an incorrect bounds check. 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: MOLY01797547; Issue ID: MSV-9155.

CVSS 3.1
5.3 MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.18% probability · 8th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-125
Affected
mediatek/mt2716 firmware · mediatek/mt2735 firmware · mediatek/mt2737 firmware · mediatek/mt6739 firmware · mediatek/mt6761 firmware · mediatek/mt6762 firmware · mediatek/mt6763 firmware · mediatek/mt6765 firmware · mediatek/mt6767 firmware · mediatek/mt6768 firmware · mediatek/mt6769 firmware · mediatek/mt6771 firmware · mediatek/mt6779 firmware · mediatek/mt6781 firmware · mediatek/mt6783 firmware · mediatek/mt6785 firmware · mediatek/mt6789 firmware · mediatek/mt6813 firmware · mediatek/mt6815 firmware · mediatek/mt6833 firmware · +40 more
Source
security@mediatek.com
EPSS trend
0%3%5%5 October 2026: 0.18%26 October 2026: 0.18%5 October 202626 October 2026

EPSS moved from 0.2% on 5 October 2026 to 0.2% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.