CVE-2026-37231

HIGH

FlexRIC 2.0.0 - Denial of Service via xApp ID Counter Wrap-Around

Title source: llm
STIX 2.1

Description

FlexRIC v2.0.0 uses a uint16_t counter for xapp_id assignment but stores the value in uint32_t message fields. After 65,530+ E42_SETUP_REQUESTs, the 16-bit counter wraps around and produces duplicate xapp_ids. The iApp (port 36422) crashes when attempting to register a duplicate ID in its internal data structure. A remote attacker can trigger this by repeatedly connecting and requesting new xApp registrations.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0043
EPSS Percentile 33.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-191
Status published
Products (1)
mosaic5g/flexric 2.0.0
Published Jun 01, 2026
Tracked Since Jun 02, 2026