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CVE-2026-78123

Quick assessment

Affected
strongSwan strongSwan
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.

strongSwan 5.0.2 到 6.0.7 版本中，OpenSSL 插件在解析 PKCS#7 时存在已释放指针解引用（Expired Pointer Dereference）漏洞。

CVSS 5.9 · Medium EPSS 0.41% · P35

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-78123

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
无效指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
strongSwan strongSwan 5.0.2 ~ 6.1.0 -

II. Public POCs for CVE-2026-78123

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III. Intelligence Information for CVE-2026-78123

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Security Blog Posts for CVE-2026-78123 (1)

Vendor Pages for CVE-2026-78123 (1)

Same Patch Batch · strongSwan · 2026-09-11 · 11 CVEs total

CVE-2026-78132 7.5 HIGH strongSwan 5.1.3-6.0.7 无限循环漏洞
CVE-2026-78133 7.5 HIGH strongSwan 6.0.0-6.0.7 libcharon 释放后使用漏洞
CVE-2026-78130 7.5 HIGH strongSwan 4.2.0-6.0.7空指针解引用
CVE-2026-78134 7.1 HIGH strongSwan 4.5.0-6.0.7 EAP插件访问控制缺陷
CVE-2026-78129 5.9 MEDIUM strongSwan 4.6.2至6.0.7 无限循环
CVE-2026-78126 5.9 MEDIUM strongSwan 6.0.7 前 EAP-AKA 空指针解引用
CVE-2026-78135 5.6 MEDIUM strongSwan 5.9.7-6.0.7 libcharon 认证绕过漏洞
CVE-2026-78131 3.7 LOW strongSwan 4.2.0-6.0.7 x509插件内存泄漏
CVE-2026-78124 3.7 LOW strongSwan 5.0.2至6.0.7证书枚举内存生命周期漏洞
CVE-2026-78127 3.7 LOW strongSwan 4.1.2至6.0.7 libcharon 内存释放缺失漏洞

IV. Related Vulnerabilities

Same product: strongSwan
Same vendor: strongSwan
Same weakness: CWE-825

V. Comments for CVE-2026-78123

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