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exim4

Exim versions before 4.100.1 that use Proxy-Protocol with an attacker-controlled proxy are vulnerable to an information disclosure issue where attackers can read uninitialized stack memory data. This vulnerability has a CVSS score of 7.5, indicating a medium severity impact primarily affecting confidentiality. The vulnerability does not allow privilege escalation or denial of service but can expose sensitive information. Numerous specific Ubuntu package versions of Exim4 are affected. There is no explicit patch link provided, so users should verify the availability of updates from their vendor.

Exim before version 4.100.1, when configured to use Proxy-Protocol with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory. This is an information disclosure vulnerability that can leak sensitive data. The CVSS 3.1 base score is 7.5, with network attack vector, high attack complexity, no privileges required, no user interaction, scope changed, high confidentiality impact, no integrity impact, and low availability impact. The vulnerability affects multiple Ubuntu-specific Exim4 package versions as listed. No known exploits are reported in the wild.

Detailed information about Exim4: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitial

Exim4: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack… (CVE-2026-94056) - Live Threat Intelligence - Threat Radar | OffSeq.com

Exim4: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack… (CVE-2026-94056)

Threats Tagged 'ubuntu-cve-2026-94056'

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