NULL pointer dereference in Mosaic5g Flexric
CVE-2026-37226
FlexRIC v2.0.0 crashes when the iApp receives an E42_RIC_SUBSCRIPTION_REQUEST 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 process (port 36422) by sending a subscription request with an arbitrary global_e2_node_id.
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 (48.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.6% 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-2026-37226?
- CVE-2026-37226 is a high-severity vulnerability in Mosaic5g Flexric, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-06-01.
- How severe is CVE-2026-37226?
- High severity. CVSS v3 base score is 7.5 out of 10.