CVE-2026-37231
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductMosaic5g Flexric
PublishedJun 1, 2026
First seenJun 1, 2026
Weakness typeCWE-191CWE-191
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mosaic5g flexric | 2.0.0 | — |
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