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CVE-2026-25657— Ericsson Packet Core Gateway (PCG) - Improper Handling of Syntactically Invalid Structure Vulnerability

Quick assessment

Affected
Ericsson Packet Core Gateway (PCG)
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.

Ericsson Packet Core Gateway是瑞典爱立信（Ericsson）公司的一个面向移动通信核心网的数据分组网关平台。 Ericsson Packet Core Gateway 1.30之前版本存在安全漏洞，该漏洞源于对语法无效结构的处理不当，可能导致攻击者持续发送特制消息造成服务降级。

AI Predicted 5.3 Difficulty: Easy EPSS 0.27% · P17

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ericsson Packet Core Gateway (PCG) < 1.30 affected
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I. Basic Information for CVE-2026-25657

Vulnerability Information
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Vulnerability Title
Ericsson Packet Core Gateway (PCG) - Improper Handling of Syntactically Invalid Structure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
语法无效结构处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Ericsson Packet Core Gateway 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ericsson Packet Core Gateway是瑞典爱立信（Ericsson）公司的一个面向移动通信核心网的数据分组网关平台。 Ericsson Packet Core Gateway 1.30之前版本存在安全漏洞，该漏洞源于对语法无效结构的处理不当，可能导致攻击者持续发送特制消息造成服务降级。
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
Ericsson Packet Core Gateway (PCG) 0 ~ 1.30 -

II. Public POCs for CVE-2026-25657

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III. Intelligence Information for CVE-2026-25657

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Vendor Advisories for CVE-2026-25657 (1)

Same Patch Batch · Ericsson · 2026-06-05 · 4 CVEs total

CVE-2025-59174 6.5 MEDIUM Ericsson Packet Core Controller 安全漏洞
CVE-2026-25658 Ericsson Packet Core Gateway (PCG) - Improper handling of missing values Vulnerability
CVE-2026-25659 Ericsson Packet Core Gateway (PCG) - Improper handling of missing values Vulnerability

IV. Related Vulnerabilities

Same product: Packet Core Gateway (PCG)
Same vendor: Ericsson
Same weakness: CWE-228

V. Comments for CVE-2026-25657

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