BlackTreeCVE IntelligenceDecember 2025 Patch TuesdayKB5002821Normal patch window
Microsoft · KB5002821
Linked CVE review
Deploy Microsoft Microsoft Office security update KB5002821
- Linked CVEs
- 4
- Confirmed exploited
- 0
- PoC or lab evidence
- 0
- Maximum CVSS
- 7.8
Confirmed exploitation, public exploit material, EPSS probability and CVSS severity answer different questions. “No confirmation recorded” means the checked sources do not currently confirm exploitation. It is not proof that exploitation has not occurred.
4 of 4 linked CVEs shown
Confirmed exploitedCVSS above 9.0
| CVE and description | Severity | Exploit reality | Forecast and access | Remediation |
|---|---|---|---|---|
CVE-2025-62562 Scheduled assessment Microsoft Outlook Remote Code Execution VulnerabilityUse after free in Microsoft Office Outlook allows an unauthorized attacker to execute code locally. | 7.8 · CVSS 3.1 · HighSource: CNA | No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds. | EPSS: 0.81% · 55.6th percentileForecast date: 2026-10-07LOCAL · LOW complexity · NONE privileges · REQUIRED user interaction | Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data. |
CVE-2025-62558 Scheduled assessment Microsoft Word Remote Code Execution VulnerabilityUse after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. | 7.8 · CVSS 3.1 · HighSource: CNA | No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds. | EPSS: 0.64% · 48.9th percentileForecast date: 2026-10-07LOCAL · LOW complexity · NONE privileges · REQUIRED user interaction | Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data. |
CVE-2025-62559 Scheduled assessment Microsoft Word Remote Code Execution VulnerabilityUse after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. | 7.8 · CVSS 3.1 · HighSource: CNA | No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds. | EPSS: 0.64% · 48.9th percentileForecast date: 2026-10-07LOCAL · LOW complexity · NONE privileges · REQUIRED user interaction | Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data. |
CVE-2025-62555 Scheduled assessment Microsoft Word Remote Code Execution VulnerabilityUse after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. | 7.0 · CVSS 3.1 · HighSource: CNA | No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds. | EPSS: 0.52% · 42.3th percentileForecast date: 2026-10-07LOCAL · HIGH complexity · NONE privileges · REQUIRED user interaction | Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data. |