CVE-2026-37231

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37231.md	Exploit Mitigation Third Party Advisory
https://gitlab.eurecom.fr/mosaic5g/flexric	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:mosaic5g:flexric:2.0.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-01 19:16

Updated : 2026-07-22 07:10

NVD link : CVE-2026-37231

Mitre link : CVE-2026-37231

CVE.ORG link : CVE-2026-37231

JSON object : View

Products Affected

mosaic5g

flexric

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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