CVE•Published 2026-06-01•Modified 2026-06-03•0 articles on news•5 live references•NVD data
CVE-2026-37231Mosaic5g · Flexric
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
FlexRIC v2.0.0 uses a uint16_t counter for xapp_id assignment but stores the value in uint32_t message fields. After 65,530+ E42_SETUP_REQUESTs, the 16-bit counter wraps around and produces duplicate xapp_ids. The iApp (port 36422) crashes when attempting to register a duplicate ID in its internal data structure. A remote attacker can trigger this by repeatedly connecting and requesting new xApp registrations.
Timeline
Published 2026-06-01
Modified 2026-06-03
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-37231Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Mosaic5g Flexric" version:"2.0.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Flexric"HTTP body or banner mentions "Flexric" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-37231Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-37231Censys host search filtered to this CVE id.
grep.app
CVE-2026-37231Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-37231GitHub code search for direct mentions.
Google dork
"CVE-2026-37231" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-37231 on GitHub.
We haven't classified any articles referencing CVE-2026-37231 yet. The external references above still apply.