CVE-2026-37233: Reachable Assertion

FlexRIC v2.0.0 contains an authorization bypass in the iApp's xApp isolation mechanism. The equality function eqxappricgenid in src/ric/iApp/xappricid.c compares m0-xappid against itself m0-xappid instead of the other argument m1-xappid, effectively ignoring the xApp identity dimension. A malicio...

CVE-2026-37231: Integer Underflow (Wrap or Wraparound)

FlexRIC v2.0.0 uses a uint16t counter for xappid assignment but stores the value in uint32t message fields. After 65,530+ E42SETUPREQUESTs, the 16-bit counter wraps around and produces duplicate xappids. The iApp port 36422 crashes when attempting to register a duplicate ID in its internal data...

CVE-2026-37230: NULL Pointer Dereference

FlexRIC v2.0.0 crashes when the near-RT RIC receives a RICINDICATION message with a ranfuncid that does not exist in its registry. The lookup returns NULL, triggering assert in Debug builds SIGABRT or NULL pointer dereference in Release builds SIGSEGV. A remote unauthenticated attacker can crash...

CVE-2026-37229: Reachable Assertion

FlexRIC v2.0.0 contains a reachable assertion in e2apcreatepdu triggered when ASN.1 PER decoding fails. A remote unauthenticated attacker can send any non-PER byte sequence e.g., a single 0x00 byte over SCTP to the near-RT RIC port 36421 or iApp port 36422 to crash the process via SIGABRT. The...

CVE-2026-37228: Reachable Assertion

FlexRIC v2.0.0 contains a reachable assertion in e2aprecvsctpmsg src/lib/ep/e2apep.c. The function allocates a fixed 32KB receive buffer and enforces assertrc = 32,768 bytes to crash the near-RT RIC, iApp, E2 Agent, or xApp process via SIGABRT. No valid E2AP PDU is required. All four SCTP endpoin...

CVE-2026-37226: NULL Pointer Dereference

FlexRIC v2.0.0 crashes when the iApp receives an E42RICSUBSCRIPTIONREQUEST referencing a non-existent E2 Node. The lookup function returns NULL, which is enforced by assert in Debug builds SIGABRT and dereferenced in Release builds SIGSEGV. A remote unauthenticated attacker can crash the iApp...

CVE-2026-37227: Reachable Assertion

FlexRIC v2.0.0 contains reachable assert0 calls in stub message handlers for whitelisted but unimplemented E2AP message types in the near-RT RIC. A remote unauthenticated attacker can send a decodable E2AP PDU of such a type e.g., E2nodeConfigurationUpdate to crash the near-RT RIC process port...

CVE-2026-37221

FlexRIC v2.0.0 crashes when receiving a RICSUBSCRIPTIONRESPONSE with an unknown ricid that has no corresponding pending event. The near-RT RIC uses assert to enforce the existence of a pending event during response processing. A remote unauthenticated attacker can send a forged...

CVE-2026-37220

FlexRIC v2.0.0 crashes when an SCTP association is closed before an E2SETUPREQUEST is sent. The near-RT RIC assumes a mapping between SCTP association and E2 node always exists in the cleanup path and enforces this via assert. A remote unauthenticated attacker can crash the near-RT RIC port 36421...

CVE-2026-37227

FlexRIC v2.0.0 contains reachable assert0 calls in stub message handlers for whitelisted but unimplemented E2AP message types in the near-RT RIC. A remote unauthenticated attacker can send a decodable E2AP PDU of such a type e.g., E2nodeConfigurationUpdate to crash the near-RT RIC process port...

FlexRIC security vulnerabilities

FlexRIC is an open-source RAN intelligent controller developed by Mosaic5G. Version FlexRIC v2.0.0 contains a security vulnerability. This vulnerability arises from the fact that when the lookup function returns NULL, the assert function during debugging builds triggers a SIGABRT, or in release...

CVE-2026-37234

FlexRIC v2.0.0 allows a single SCTP connection to bind multiple xappids by sending multiple E42SETUPREQUESTs. On disconnect, only the first registered xappid's resources are cleaned up; subsequent xappids and their subscriptions remain as stale entries. A remote attacker can exploit this to leak...

CVE-2026-37226

FlexRIC v2.0.0 crashes when the iApp receives an E42RICSUBSCRIPTIONREQUEST referencing a non-existent E2 Node. The lookup function returns NULL, which is enforced by assert in Debug builds SIGABRT and dereferenced in Release builds SIGSEGV. A remote unauthenticated attacker can crash the iApp...

CVE-2026-37230

FlexRIC v2.0.0 crashes when the near-RT RIC receives a RICINDICATION message with a ranfuncid that does not exist in its registry. The lookup returns NULL, triggering assert in Debug builds SIGABRT or NULL pointer dereference in Release builds SIGSEGV. A remote unauthenticated attacker can crash...

CVE-2026-37231

FlexRIC v2.0.0 uses a uint16t counter for xappid assignment but stores the value in uint32t message fields. After 65,530+ E42SETUPREQUESTs, the 16-bit counter wraps around and produces duplicate xappids. The iApp port 36422 crashes when attempting to register a duplicate ID in its internal data...

FlexRIC security vulnerabilities

FlexRIC is an open-source RAN intelligent controller developed by Mosaic5G. Version FlexRIC v2.0.0 contains a security vulnerability. This vulnerability arises from handling RICINDICATION messages that do not contain the ranfuncid field, causing an assert to be triggered or null pointer...

CVE-2026-37230

FlexRIC v2.0.0 crashes when the near-RT RIC receives a RICINDICATION message with a ranfuncid that does not exist in its registry. The lookup returns NULL, triggering assert in Debug builds SIGABRT or NULL pointer dereference in Release builds SIGSEGV. A remote unauthenticated attacker can crash...

CVE-2026-37231

FlexRIC v2.0.0 uses a uint16t counter for xappid assignment but stores the value in uint32t message fields. After 65,530+ E42SETUPREQUESTs, the 16-bit counter wraps around and produces duplicate xappids. The iApp port 36422 crashes when attempting to register a duplicate ID in its internal data...

PT-2026-45453

FlexRIC v2.0.0 contains a reachable assertion in the iApp message dispatcher. The dispatcher validates incoming E2AP messages against a 9-entry whitelist using assert. A remote unauthenticated attacker can send any decodable E2AP PDU with a message type not in the whitelist to crash the iApp...

CVE-2026-37231

FlexRIC v2.0.0 is vulnerable to a crash in its iApp (port 36422 ) due to an integer wrap-around issue. The software uses a uint16_t counter for xapp_id assignment while storing the value in uint32_t message fields. After receiving over 65,530 E42_SETUP_REQUESTs, the 16-bit counter wraps around, p...