CVE-2026-37225

Remote Denial of Service via E42_RIC_SUBSCRIPTION_REQUEST Validation Mismatch in FlexRIC

Published Jun 1, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
FlexRIC v2.0.0 crashes when the iApp receives an E42_RIC_SUBSCRIPTION_REQUEST with an empty ricEventTriggerDefinition field. The E42 layer decoder accepts this as valid, but the E2AP encoder asserts a non-empty constraint when forwarding the request. A remote unauthenticated attacker can crash the iApp process (port 36422) via SIGABRT by exploiting this cross-layer validation mismatch.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mosaic5g
Mosaic5g flexric
Vendors & Products Mosaic5g
Mosaic5g flexric
Type Values Removed Values Added
Title Remote Denial of Service via E42_RIC_SUBSCRIPTION_REQUEST Validation Mismatch in FlexRIC
Type Values Removed Values Added
Title Crash on Empty ricEventTriggerDefinition in FlexRIC
Weaknesses CWE-20
Type Values Removed Values Added
Title Crash on Empty ricEventTriggerDefinition in FlexRIC
Weaknesses CWE-20
Type Values Removed Values Added
Weaknesses CWE-617
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description FlexRIC v2.0.0 crashes when the iApp receives an E42_RIC_SUBSCRIPTION_REQUEST with an empty ricEventTriggerDefinition field. The E42 layer decoder accepts this as valid, but the E2AP encoder asserts a non-empty constraint when forwarding the request. A remote unauthenticated attacker can crash the iApp process (port 36422) via SIGABRT by exploiting this cross-layer validation mismatch.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jun 1, 2026, 6:48 PM
Reserved
Apr 6, 2026, 12:00 AM
Status
Deferred
Published
Jun 1, 2026, 5:16 PM
Modified
Jul 22, 2026, 7:10 AM