CVE-2026-7183— aligungr UERANSIM Radio Link Simulation Layer rls_pdu.cpp DecodeRlsMessage uncaught exception
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I. Basic Information for CVE-2026-7183
Vulnerability Information
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Vulnerability Title
aligungr UERANSIM Radio Link Simulation Layer rls_pdu.cpp DecodeRlsMessage uncaught exception
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been found in aligungr UERANSIM up to 3.2.7. The affected element is the function rls::DecodeRlsMessage in the library src/lib/rls/rls_pdu.cpp of the component Radio Link Simulation Layer. The manipulation of the argument pduLength leads to uncaught exception. The attack may be initiated remotely. Upgrading to version 3.2.8 is sufficient to fix this issue. The identifier of the patch is ca1a66fffe282767bb08618af9f848e3b68ea47b. It is suggested to upgrade the affected component. This behavior is related to CVE-2024-37877. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
未捕获的异常
Source: NVD (National Vulnerability Database)
Vulnerability Title
UERANSIM 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
UERANSIM是土耳其Ali Güngör个人开发者的一款开源的先进 5G UE 和 RAN（gNodeB）模拟器。 UERANSIM 3.2.7及之前版本存在安全漏洞，该漏洞源于Radio Link Simulation Layer组件中函数rls::DecodeRlsMessage对参数pduLength操作不当，可能导致未捕获异常。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-7183
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- Submit #800026: UERANSIM 3.2.7 DoS via Malformed RLS Packet (CWE-248)third-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-7183
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V. Comments for CVE-2026-7183
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