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PatchSiren cyber security CVE debrief

CVE-2025-62623 AMD CVE debrief

A heap-based buffer overflow in the ionic cloud driver for VMware ESXi could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution. This vulnerability affects VMware ESXi systems using the ionic cloud driver, and defenders should prioritize verifying exposure and assessing potential impact. The CVE record and NVD entry provide initial details on the vulnerability, which requires verification and potential remediation. VMware ESXi administrators and security teams should review configurations and ionic cloud driver usage to identify potential exposure.

Vendor
AMD
Product
ESXi 8.x and ESXi 9.x hosts using AMD-Pensando DPU products
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-13
Original CVE updated
2026-09-30
Advisory published
2026-05-13
Advisory updated
2026-09-30

Who should care

VMware ESXi administrators and security teams should assess potential exposure and impact of a heap-based buffer overflow vulnerability in the ionic cloud driver for VMware ESXi. This vulnerability requires verification and potential remediation. Defenders should prioritize verifying exposure and assessing potential impact, reviewing VMware ESXi configurations and ionic cloud driver usage.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact of a heap-based buffer overflow vulnerability in the ionic cloud driver for VMware ESXi, which could allow an attacker to achieve privilege escalation.

  • Privilege escalation vulnerability requires verification and potential remediation
  • Potential impact on VMware ESXi systems using the ionic cloud driver

Technical summary

The CVE record describes a heap-based buffer overflow vulnerability in the ionic cloud driver for VMware ESXi, which could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution. This vulnerability affects VMware ESXi systems using the ionic cloud driver. The ionic cloud driver is used in VMware ESXi, and a heap-based buffer overflow vulnerability could allow an attacker to achieve privilege escalation.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, reviewing VMware ESXi configurations and ionic cloud driver usage.

Recommended defensive actions

  • Review VMware ESXi configurations and ionic cloud driver usage to identify potential exposure
  • Assess the impact of a potential privilege escalation vulnerability
  • Verify system logs for suspicious activity related to the ionic cloud driver

Evidence notes

The CVE record and NVD entry provide initial details on the heap-based buffer overflow vulnerability in the ionic cloud driver for VMware ESXi. The vulnerability has been described as a heap-based buffer overflow, which could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution. Defenders should verify exposure and assess potential impact by reviewing VMware ESXi configurations and ionic cloud driver usage. The CVE record was published on

Sources and references

Verified primary and authoritative sources

  • CVE-2025-62623 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-62623

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-62623 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-62623

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.