CVE-2026-37231 Details
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.
A vulnerability in EURECOM FlexRIC version 2.0.0 allows for a denial-of-service condition by causing the iApp to crash when registering duplicate xapp_ids. This issue arises because the application uses a 16-bit counter for xapp_id assignments, which wraps around after approximately 65,530 requests. The wrapped value is then stored in a 32-bit message field, leading to duplicates. A remote attacker can exploit this by repeatedly sending xApp registration requests, causing the iApp to crash when it encounters a duplicate ID.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37231.md | [email protected] | ExploitMitigationThird Party Advisory |
| https://gitlab.eurecom.fr/mosaic5g/flexric | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-191 | Integer Underflow (Wrap or Wraparound) | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mosaic5g flexric | 2.0.0 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 3, 2026 | Initial Analysis | [email protected] |
| Jun 2, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | New CVE Received | [email protected] |