Exploitation ongoing with high activity in latest observed window (1 mentions)
Recommended action window: Immediate (within 24h)
NVD description
An issue was discovered in OpenAirInterface5G 2.4.0 (nr-softmodem) in the E2SM-KPM RAN Function's PRB utilization metric calculation. The functions fill_RRU_PrbTotDl() and fill_RRU_PrbTotUl() in openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_kpm_subs.c (lines 182 and 197) compute PRB usage percentages by dividing by the difference of two consecutive total_prb_aggregate samples without checking for zero. When a malicious xApp sends a high volume of E42_RIC_SUBSCRIPTION_REQUESTs via the FlexRIC iApp (port 36422/SCTP), the E2 Agent generates KPM Indication reports at high frequency. If two consecutive sampling intervals yield identical PRB aggregate values, the divisor becomes zero, triggering SIGFPE and crashing the entire 5G base station process (nr-softmodem). This results in complete 5G cell service interruption for all connected UEs. No authentication is required.
Priority
MEDIUM
Exploitation
ACTIVE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 1 product
| Date | Total | Labels |
|---|
| 2026-06-01 | 1 | Active Exploitation1 |
| 2026-06-04 | 1 | Disclosure1 |
| 2026-07-28 | 1 | Patch1 |
🚨 HIGH: CVE-2026-37232 (CVSS 8.6) - OpenAirInterface5G 2.4.0 divide-by-zero flaw allows unauthenticated remote DoS of 5G base stations. Complete cell service disruption possible. Patch immediately. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/H7YjxqGJIj
Post summary
The tweet announces a high‑severity divide‑by‑zero vulnerability in OpenAirInterface5G 2.4.0 that can cause remote DoS, and urges immediate patching.
🔴 OpenAirInterface5G, Divide-by-Zero DoS, #CVE-2026-37232 (Critical) -DC-Jun2026-200 https://dailycve.com/openairinterface5g-divide-by-zero-dos-cve-2026-37232-critical-dc-jun2026-200/
Post summary
A new critical divide‑by‑zero Denial‑of‑Service vulnerability (CVE‑2026‑37232) has been disclosed for OpenAirInterface5G, with no PoC, exploit, or mitigation details provided in the brief.
⚠️ HIGH — CVE-2026-37232 An issue was discovered in OpenAirInterface5G 2.4.0 (nr-softmodem) in the E2SM-KPM RAN Function's PRB utilization metri… ⚡ Exploit in the wild Full analysis → https://sec.kaitan.id/cves/CVE-2026-37232 #OpenAI #CyberSecurity #InfoSec
Post summary
The tweet reports that CVE-2026-37232, a high‑severity flaw in OpenAirInterface5G 2.4.0, is being actively exploited in the wild, but offers no PoC, tool details, patch information, or technical specifics.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | openairinterface | openairinterface5g | 2.4.0 | - | - |