What is CVE-2023-42118?

CVE-2023-42118 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Exim libspf2 Integer Underflow Remote Code Execution Vulnerability

Which CVE IDs does CVE-2023-42118 cover?

CVE-2023-42118 covers the following CVE IDs: CVE-2023-42118. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2023-42118?

CVE-2023-42118 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2023-42118?

CVE-2023-42118 affects 1 product, including: azl4 libspf2 1.2.11-19.20210922git4915c308.azl4 on Azure Linux 4.0.

CVE-2023-42118HighCVSS 8.8

Exim libspf2 Integer Underflow Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 20, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2023-42118 →

🎯 Affected products1

azl4 libspf2 1.2.11-19.20210922git4915c308.azl4 on Azure Linux 4.0

✅ Remediation

KBRelease Notes (Security Update) — fixed build 0:1.2.11-19.20210922git4915c308.azl4

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-42118
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade