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CVE-2026-100892— aligungr UERANSIM nr-gnb handler.cpp ULInformationTransfer memory corruption

Quick assessment

Affected
aligungr UERANSIM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 aligungr UERANSIM（版本不超过 3.3.0）中发现了一个漏洞。该漏洞影响 nr-gnb 组件中 src/gnb/rrc/handler.cpp 文件的 ULInformationTransfer 函数。通过操纵参数 dedicatedNASMessage，可导致内存损坏。该攻击可远程发起，且相关利用代码已被公开，可被实际使用。厂商已在披露前早期被联系，但未作任何回应。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-100892

Vulnerability Information
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Vulnerability Title
aligungr UERANSIM nr-gnb handler.cpp ULInformationTransfer memory corruption
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in aligungr UERANSIM up to 3.3.0. This affects the function ULInformationTransfer of the file src/gnb/rrc/handler.cpp of the component nr-gnb. Performing a manipulation of the argument dedicatedNASMessage results in memory corruption. The attack can be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
aligungr UERANSIM 3.0 cpe:2.3:a:aligungr:ueransim:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-100892

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III. Intelligence Information for CVE-2026-100892

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Other References for CVE-2026-100892 (1)

IV. Related Vulnerabilities

Same product: UERANSIM
Same vendor: aligungr
Same weakness: CWE-119

V. Comments for CVE-2026-100892

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