Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1, Word for Mac 2011, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server 2010 SP2 and 2013 SP1, and Office Web Apps Server 2010 SP2 and 2013 SP1 allow remote attackers to execute arbitrary code via a crafted RTF document, aka "Microsoft Office Memory Corruption Vulnerability."
Conclusion & alert: CVE-2015-1641 is rated Critical Active Threat (94.8/100): CVSS High severity, with high exploitation likelihood (EPSS 97.33%, 100th percentile). Core evidence: CISA KEV confirms active exploitation (added 2021-11-03) affecting Microsoft / Office. a weakness (CWE-787) Unauthenticated remote administrative access may be possible. EPSS rose +3.66% over the last day, indicating growing attacker interest. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.
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: Microsoft Office Memory Corruption Vulnerability · CISA KEV detail
: 2021-11-03
: 2022-05-03
: Apply updates per vendor instructions.
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 | 2026-06-15 | 93.67% | 97.33% | +3.66% |
| 2 | 2026-05-03 | 93.63% | 93.67% | +0.04% |
| 3 | 2025-10-17 | — | 93.63% | — |
Full EPSS history (29 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] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | office | 2010 | cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:*:* |
| microsoft | office_compatibility_pack | — | cpe:2.3:a:microsoft:office_compatibility_pack:-:sp3:*:*:*:*:*:* |
| microsoft | office_web_apps | 2010 | cpe:2.3:a:microsoft:office_web_apps:2010:sp2:*:*:*:*:*:* |
| microsoft | office_web_apps | 2013 | cpe:2.3:a:microsoft:office_web_apps:2013:sp1:*:*:*:*:*:* |
| microsoft | outlook | 2011 | cpe:2.3:a:microsoft:outlook:2011:*:*:*:*:mac_os_x:*:* |
| microsoft | sharepoint_server | 2010 | cpe:2.3:a:microsoft:sharepoint_server:2010:sp2:*:*:*:*:*:* |
| microsoft | sharepoint_server | 2013 | cpe:2.3:a:microsoft:sharepoint_server:2013:sp1:*:*:*:*:*:* |
| microsoft | word | 2007 | cpe:2.3:a:microsoft:word:2007:sp3:*:*:*:*:*:* |
| microsoft | word | 2010 | cpe:2.3:a:microsoft:word:2010:sp2:*:*:*:*:*:* |
| microsoft | word | 2011 | cpe:2.3:a:microsoft:word:2011:*:*:*:*:macos:*:* |
| microsoft | word | 2013 | cpe:2.3:a:microsoft:word:2013:sp1:*:*:-:*:*:* |
| microsoft | word | 2013 | cpe:2.3:a:microsoft:word:2013:sp1:*:*:rt:*:*:* |
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/73995 | Broken Link Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1032104 | Broken Link Third Party Advisory VDB Entry |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-033 | Patch Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1641 | US Government Resource |