Use after free in Microsoft Office Visio allows an unauthorized attacker to execute code locally.
Conclusion & alert: CVE-2025-53734 is rated Moderate Risk (49/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.27%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-29 | 0.18% | 0.27% | +0.09% |
| 2 | 2026-05-08 | 0.06% | 0.18% | +0.13% |
| 3 | 2026-01-20 | — | 0.06% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | 365_apps | — | cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* |
| microsoft | 365_apps | — | cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:* |
| microsoft | office | 2019 | cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:* |
| microsoft | office | 2019 | cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:* |
| microsoft | office_long_term_servicing_channel | 2021 | cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:* |
| microsoft | office_long_term_servicing_channel | 2021 | cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:* |
| microsoft | office_long_term_servicing_channel | 2024 | cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:* |
| microsoft | office_long_term_servicing_channel | 2024 | cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:* |
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53734 | Vendor Advisory |