CVE-2026-62834: CWE-347: Improper Verification of Cryptographic Signature in Microsoft Azure Data Factory

CVE-2026-62834 is an improper verification of cryptographic signature vulnerability in Microsoft Azure Data Factory. This weakness enables an unauthorized attacker to elevate privileges remotely over a network. The vulnerability is rated critical with a CVSS 3.1 score of 9.3, reflecting high impact on confidentiality and integrity with no impact on availability. Microsoft manages remediation for this cloud-hosted service and has released an official fix as detailed in their security advisory.

An attacker exploiting this vulnerability can gain elevated privileges in Azure Data Factory, potentially compromising confidentiality and integrity of data and operations. The vulnerability does not affect availability. No known exploits are reported in the wild at this time.

Microsoft has released an official fix for this vulnerability. As Azure Data Factory is a cloud service, Microsoft manages the remediation server-side. Users should refer to the Microsoft security advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62834 for detailed guidance and ensure their Azure Data Factory instances are updated accordingly.