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CVE-2026-44473— Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

Quick assessment

Affected
ellanetworks core
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ella Core是Ella Networks开源的一个用于私有网络的5G核心网解决方案。 Ella Core 1.10.0之前版本存在安全漏洞，该漏洞源于未验证PDUSessionResourceSetupResponse消息是否来自与UE逻辑NG连接绑定的SCTP关联，导致具有有效NG设置的无线电可发送伪造消息并创建GTP隧道。

CVSS 7.1 · High EPSS 0.27% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
ellanetworks core < 1.10.0 affected
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I. Basic Information for CVE-2026-44473

Vulnerability Information
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Vulnerability Title
Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse
Source: CVE Program / CVE List V5
Vulnerability Description
Ella Core is a 5G core designed for private networks. Prior to 1.10.0, a radio with a valid NG Setup can send a forged PDUSessionResourceSetupResponse carrying any UE's AMF-UE-NGAP-ID. Ella Core does not verify the message arrived on the SCTP association bound to that UE's logical NG-connection, then creates a GTP tunnel towards that radio. This vulnerability is fixed in 1.10.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当实现的标准安全检查
Source: CVE Program / CVE List V5
Vulnerability Title
Ella Core 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ella Core是Ella Networks开源的一个用于私有网络的5G核心网解决方案。 Ella Core 1.10.0之前版本存在安全漏洞，该漏洞源于未验证PDUSessionResourceSetupResponse消息是否来自与UE逻辑NG连接绑定的SCTP关联，导致具有有效NG设置的无线电可发送伪造消息并创建GTP隧道。
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

Vendor Product Affected Versions CPE Subscribe
ellanetworks core < 1.10.0 -

II. Public POCs for CVE-2026-44473

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7831 chars
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III. Intelligence Information for CVE-2026-44473

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Vendor Advisories for CVE-2026-44473 (1)

Same Patch Batch · ellanetworks · 2026-05-27 · 3 CVEs total

CVE-2026-44475 6.1 MEDIUM Ella Core: UE Security Capability bypass on NGAP PathSwitchRequest
CVE-2026-44474 3.7 LOW Ella Core: Handover failures during concurrent Security Mode Command

IV. Related Vulnerabilities

Same product: core
Same vendor: ellanetworks
Same weakness: CWE-358

V. Comments for CVE-2026-44473

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