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CVE-2026-78133

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是strongSwan团队开源的一个提供IPsec与IKEv2协议支持并实现安全虚拟专用网络连接的代理中间件。 strongSwan 6.0.0版本至6.0.7版本存在资源管理错误漏洞，该漏洞源于libcharon在IKEv2重密钥冲突处理中存在释放后重用，可能导致服务崩溃或任意代码执行。

CVSS 7.5 · High EPSS 0.43% · P35

Affected Version Matrix 1

VendorProduct Version RangeStatus
strongSwan strongSwan 6.0.0< 6.1.0 affected
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I. Basic Information for CVE-2026-78133

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
strongSwan 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
strongSwan是strongSwan团队开源的一个提供IPsec与IKEv2协议支持并实现安全虚拟专用网络连接的代理中间件。 strongSwan 6.0.0版本至6.0.7版本存在资源管理错误漏洞，该漏洞源于libcharon在IKEv2重密钥冲突处理中存在释放后重用，可能导致服务崩溃或任意代码执行。
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
strongSwan strongSwan 6.0.0 ~ 6.1.0 -

II. Public POCs for CVE-2026-78133

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III. Intelligence Information for CVE-2026-78133

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Security Blog Posts for CVE-2026-78133 (1)

Vendor Pages for CVE-2026-78133 (1)

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

CVE-2026-78132 7.5 HIGH strongSwan 资源管理错误漏洞
CVE-2026-78130 7.5 HIGH strongSwan 异常处理不当漏洞
CVE-2026-78134 7.1 HIGH strongSwan 授权问题漏洞
CVE-2026-78123 5.9 MEDIUM strongSwan 资源管理错误漏洞
CVE-2026-78129 5.9 MEDIUM strongSwan 资源管理错误漏洞
CVE-2026-78126 5.9 MEDIUM strongSwan 异常处理不当漏洞
CVE-2026-78135 5.6 MEDIUM strongSwan 处理逻辑错误漏洞
CVE-2026-78131 3.7 LOW strongSwan 资源管理错误漏洞
CVE-2026-78124 3.7 LOW strongSwan 资源管理错误漏洞
CVE-2026-78127 3.7 LOW strongSwan 资源管理错误漏洞

IV. Related Vulnerabilities

Same product: strongSwan
Same vendor: strongSwan
Same weakness: CWE-416

V. Comments for CVE-2026-78133

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