CVE-2023-36998

high

Description

The NextEPC MME <= 1.0.1 (fixed in commit a8492c9c5bc0a66c6999cb5a263545b32a4109df) contains a stack-based buffer overflow vulnerability in the Emergency Number List decoding method. An attacker may send a NAS message containing an oversized Emergency Number List value to the MME to overwrite the stack with arbitrary bytes. An attacker with a cellphone connection to any base station managed by the MME may exploit this vulnerability without having to authenticate with the LTE core.

References

https://cellularsecurity.org/ransacked

Details

Source: Mitre, NVD

Published: 2025-01-22

Updated: 2026-07-05

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 8.9

Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H

Severity: High

EPSS

EPSS: 0.00031