MEDIUM 4.3 Microsoft PoC

CVE-2025-23419

TLS Session Resumption Vulnerability

Microsoft Security Update 2025-Feb: TLS Session Resumption Vulnerability

Affected Products

azl3 nginx 1.25.4-4 on Azure Linux 3.0
cbl2 nginx 1.22.1-13 on CBL-Mariner 2.0
azl3 nginx 1.25.4-3 on Azure Linux 3.0
cbl2 nginx 1.22.1-13 on CBL Mariner 2.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-23419
https://nvd.nist.gov/vuln/detail/CVE-2025-23419

Published: 2025-02-11 · Source: Microsoft · Feed updated: 2026-09-28

This medium severity vulnerability with a CVSS score of 4.3 was published on 2025-02-11 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. Affected: azl3 nginx 1.25.4-4 on Azure Linux 3.0, cbl2 nginx 1.22.1-13 on CBL-Mariner 2.0, azl3 nginx 1.25.4-3 on Azure Linux 3.0 and 1 more.

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