Bug 2506673 (CVE-2026-66141)

Summary: CVE-2026-66141 exim: Exim: Local privilege escalation via .forward mishandling
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Exim. This vulnerability allows a local attacker to achieve privilege escalation due to the mishandling of `force_command` for a pipe transport when processing `.forward` files. This could enable an unprivileged user to gain elevated access on the system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-07-24 05:01:15 UTC
Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.