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CVE-2026-58279 Microsoft CVE debrief

CVE-2026-58279 is a medium-severity vulnerability in Azure CycleCloud, caused by missing authorization. This allows an authorized attacker to elevate privileges over a network. The CVSS score is 6.5, with a vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N. The vulnerability is classified under CWE-862. Security teams and administrators responsible for Azure CycleCloud should assess the vulnerability and apply patches or mitigations as recommended by Microsoft. The CVE record was published on 2026-07-14T17:17:12.110Z and has not been modified since then. The NVD entry is currently Analyzed.

Vendor
Microsoft
Product
Azure Cyclecloud
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-22
Advisory published
2026-07-14
Advisory updated
2026-07-22

Who should care

Security teams and administrators responsible for Azure CycleCloud should assess the vulnerability and apply patches or mitigations as recommended by Microsoft. Additionally, operators and platform administrators should review Azure CycleCloud configurations to ensure proper authorization and access controls. Vulnerability management and security teams should monitor Azure CycleCloud systems for suspicious activity and potential exploitation attempts.

Technical summary

CVE-2026-58279 is a medium-severity vulnerability in Azure CycleCloud, with a CVSS score of 6.5. The vulnerability is caused by missing authorization, allowing an authorized attacker to elevate privileges over a network. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N. The vulnerability is classified under CWE-862. Affected product deployments should be verified for exposure, and defenders should review official advisories for scope and severity.

Defensive priority

Apply patches or mitigations recommended by Microsoft to address the missing authorization vulnerability in Azure CycleCloud. Review and update Azure CycleCloud configurations to ensure proper authorization and access controls.

Recommended defensive actions

  • Apply patches or mitigations recommended by Microsoft to address the missing authorization vulnerability in Azure CycleCloud.
  • Review and update Azure CycleCloud configurations to ensure proper authorization and access controls.
  • Monitor Azure CycleCloud systems for suspicious activity and potential exploitation attempts.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability is documented in the CVE record and NVD detail pages. Microsoft has provided a patch and vendor advisory for the vulnerability. Evidence limits suggest that affected deployments should be verified for exposure, and defenders should review official advisories for scope and severity. Additional verification tasks may be required to confirm affected systems and apply mitigations.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-14T17:17:12.110Z and has not been modified since then. The NVD entry is currently Analyzed.