CRITICAL 9.1 Microsoft

CVE-2026-34182

CMS AuthEnvelopedData Processing May Accept Forged Messages

Microsoft Security Update 2026-Jun: CMS AuthEnvelopedData Processing May Accept Forged Messages

Affected Products

azl3 cloud-hypervisor 51.1.56-1 on Azure Linux 3.0
azl3 edk2 20240524git3e722403cd16-17 on Azure Linux 3.0
azl3 nodejs 24.14.1-3 on Azure Linux 3.0
azl3 openssl 3.3.5-5 on Azure Linux 3.0
azl3 qemu 9.1.0-7 on Azure Linux 3.0
azl3 rust 1.75.0-29 on Azure Linux 3.0
azl3 rust 1.90.0-8 on Azure Linux 3.0

References

Published: 2026-06-09 · Source: Microsoft · Feed updated: 2026-08-04

This critical severity vulnerability with a CVSS score of 9.1 was published on 2026-06-09 via Microsoft. Affected: azl3 cloud-hypervisor 51.1.56-1 on Azure Linux 3.0, azl3 edk2 20240524git3e722403cd16-17 on Azure Linux 3.0, azl3 nodejs 24.14.1-3 on Azure Linux 3.0 and 4 more.

Risk Timeline

CVE Disclosed2026-06-09 · 55 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34182

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2026-34182

Related Vulnerabilities

CVE	Title	Severity	CVSS
CVE-2026-40175	Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain	CRITICAL	10.0
CVE-2026-42960	Possible cache poisoning via promiscuous records for the authority section	CRITICAL	10.0
CVE-2026-46595	Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x	CRITICAL	10.0
CVE-2026-39821	Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/ne	CRITICAL	10.0
CVE-2024-24576 PoC	Rusts's `std::process::Command` did not properly escape arguments of batch files	CRITICAL	10.0
CVE-2026-7374	Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via sy	CRITICAL	9.9

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