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CRITICAL

CVE-2022-37452

CVSS v3

9.8

CRITICAL

EPSS Score

3.8 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2022-37452 Red Hat Product Security

    Exim: heap-based buffer overflow in host_name_lookup in host.c.

Full record on NVD

Description

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.

Technical details

Published
2022-08-07

Frequently asked questions

What is CVE-2022-37452?

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.

Is CVE-2022-37452 actively exploited?

Active exploitation of CVE-2022-37452 has not been confirmed. Its EPSS score was 3.8% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-37452?

CVE-2022-37452 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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