216.73.217.22

CVE-2026-37232

· Published 01/06/2026 19:16 · Modified 02/06/2026 14:47

Labels: CVE-2026-37232 2026-06-01CVE-2026-37232CWE-369[email protected]

Essential information

Published
01/06/2026 19:16
Modified
02/06/2026 14:47
Author
Creator
CVSS
8.6 HIGH (v3.1)
CISA KEV
No
CWE
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS metrics

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.

NVD status

Status
Awaiting Analysis — CVE has been recently published to the CVE List and has been received by the NVD.
Source
[email protected]
NVD
View on NVD

Affected products (CPE)

ProductCPE
openairinterface / openairinterface5g cpe:2.3:a:openairinterface:openairinterface5g:2.4.0:*:*:*:*:*:*:*

References