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CVE-2026-66141

Quick assessment

Affected
Exim Exim
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.

Exim是Exim组织开源的一个运行于Unix系统中的开源消息传送代理(MTA),它主要负责邮件的路由、转发和投递。 Exim 4.99.5之前版本存在软件供应链问题漏洞，该漏洞源于对管道传输的force_command处理不当，可能导致通过.forward文件进行权限提升。

CVSS 7.4 · High EPSS 0.14% · P3

Affected Version Matrix 1

VendorProduct Version RangeStatus
Exim Exim 4.82< 4.99.5 affected
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I. Basic Information for CVE-2026-66141

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
从非可信控制范围包含功能例程
Source: CVE Program / CVE List V5
Vulnerability Title
Exim 软件供应链问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Exim是Exim组织开源的一个运行于Unix系统中的开源消息传送代理(MTA),它主要负责邮件的路由、转发和投递。 Exim 4.99.5之前版本存在软件供应链问题漏洞，该漏洞源于对管道传输的force_command处理不当，可能导致通过.forward文件进行权限提升。
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
Exim Exim 4.82 ~ 4.99.5 -

II. Public POCs for CVE-2026-66141

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III. Intelligence Information for CVE-2026-66141

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Mailing List Discussions for CVE-2026-66141 (1)

IV. Related Vulnerabilities

Same product: Exim
Same vendor: Exim
Same weakness: CWE-829

V. Comments for CVE-2026-66141

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