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TI-2022-17506 Aliases CVE-2022-37452GHSA-2xwx-3gmg-f9vj

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup…

Priority MEDIUM 49CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.

Why it matters now

EPSS 0.03768 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*before 4.95VulnerableExim
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* Versions before 4.95 Vulnerable ·Exim
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-37452
  2. 2026-10-03 Alias added: GHSA-2xwx-3gmg-f9vj
  3. 2026-10-04 EPSS moved to the 50th–90th percentile
  4. 2026-10-23 EPSS moved to the 90th–95th percentile
  5. 2026-10-24 EPSS moved to the 50th–90th percentile

References

Exploit 1

Patch 2

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences