CVE-2026-37229: n/a
FlexRIC v2.0.0 contains a reachable assertion in e2ap_create_pdu() 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 assertion is reached before any protocol-level validation occurs. All three E2AP protocol versions (v1.01, v2.03, v3.01) are affected.
AI Analysis
Technical Summary
CVE-2026-37229 describes a reachable assertion vulnerability in FlexRIC v2.0.0's e2ap_create_pdu() function. The assertion is triggered when ASN.1 PER decoding fails, allowing a remote unauthenticated attacker to send arbitrary non-PER byte sequences over SCTP to ports 36421 or 36422, causing the process to abort with SIGABRT. This occurs before any protocol-level validation, affecting E2AP protocol versions v1.01, v2.03, and v3.01. The vulnerability leads to denial of service by crashing the near-RT RIC or iApp components.
Potential Impact
The vulnerability allows remote unauthenticated attackers to cause a denial of service by crashing the FlexRIC process handling E2AP messages. There is no impact on confidentiality or integrity, but availability is severely affected due to process termination. No known exploits are reported in the wild as of the published date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to the affected SCTP ports (36421 and 36422) to trusted sources to reduce exposure. Monitor for unexpected process crashes and restart affected services as needed.
CVE-2026-37229: n/a
Description
FlexRIC v2.0.0 contains a reachable assertion in e2ap_create_pdu() 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 assertion is reached before any protocol-level validation occurs. All three E2AP protocol versions (v1.01, v2.03, v3.01) are affected.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/mosaic5g/flexricRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-37229 describes a reachable assertion vulnerability in FlexRIC v2.0.0's e2ap_create_pdu() function. The assertion is triggered when ASN.1 PER decoding fails, allowing a remote unauthenticated attacker to send arbitrary non-PER byte sequences over SCTP to ports 36421 or 36422, causing the process to abort with SIGABRT. This occurs before any protocol-level validation, affecting E2AP protocol versions v1.01, v2.03, and v3.01. The vulnerability leads to denial of service by crashing the near-RT RIC or iApp components.
Potential Impact
The vulnerability allows remote unauthenticated attackers to cause a denial of service by crashing the FlexRIC process handling E2AP messages. There is no impact on confidentiality or integrity, but availability is severely affected due to process termination. No known exploits are reported in the wild as of the published date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to the affected SCTP ports (36421 and 36422) to trusted sources to reduce exposure. Monitor for unexpected process crashes and restart affected services as needed.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1de301e29bf47b503a4ecb
Added to database: 06/01/2026, 19:52:33 UTC
Last enriched: 06/08/2026, 20:52:22 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 72
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