What is CVE-2026-48858?

CVE-2026-48858 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. ftp client PASV response IP not validated against control peer, enabling SSRF and FTP bounce attacks

Which CVE IDs does CVE-2026-48858 cover?

CVE-2026-48858 covers the following CVE IDs: CVE-2026-48858. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-48858?

CVE-2026-48858 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-48858?

CVE-2026-48858 affects 1 product, including: azl3 erlang 26.2.5.20-1 on Azure Linux 3.0.

CVE-2026-48858MediumCVSS 6.5

ftp client PASV response IP not validated against control peer, enabling SSRF and FTP bounce attacks

Vendor

Microsoft Security Response Center (MSRC)

Published

June 19, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-48858 →

🎯 Affected products1

azl3 erlang 26.2.5.20-1 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 26.2.5.21-2

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48858
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade