Vulnerability in Mosaic5g Flexric
CVE-2026-37229
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: -0.000
Affected products
- Mosaic5g Flexric — versions 2.0.0
Weakness classification (CWE)
References
- gitlab.eurecom.fr/mosaic5g/flexric (Product)
- github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisor… (Exploit, Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2026-37229?
- CVE-2026-37229 is a high-severity vulnerability in Mosaic5g Flexric, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2026-06-01.
- How severe is CVE-2026-37229?
- High severity. CVSS v3 base score is 7.5 out of 10.