Is CVE-2026-94056 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-94056?

CVE-2026-94056 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-94056

Description

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.