CVE-2026-37231 | THREATINT

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.

PUBLISHED Reserved 2026-04-06 | Published 2026-06-01 | Updated 2026-06-02 | Assigner mitre

References

gitlab.eurecom.fr/mosaic5g/flexric

github.com/...nan-luo/blob/main/advisories/CVE-2026-37231.md

cve.org (CVE-2026-37231)

nvd.nist.gov (CVE-2026-37231)

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