Security readout for executives and security teams
This is an old Microsoft Word flaw where opening a malicious Word document can let an attacker run code on the user’s computer. It affects legacy Office, Word Viewer, Compatibility Pack, and Office for Mac products listed in the CVE. CISA KEV indicates known exploitation, so any remaining legacy installations deserve priority attention. Exposure is most likely on legacy endpoints still running Office Word 2002 SP3, 2003 SP3, 2007 SP1/SP2, Word Viewer, Compatibility Pack 2007 SP1/SP2, Office for Mac 2004/2008, or Open XML File Format Converter for Mac. Treat this as a high-priority legacy exposure. It is not a new vulnerability, but CISA KEV status means exploitation is established. The main business risk is an old Office component enabling malware execution through a document opened by a user. Mitigation focus: Apply Microsoft guidance and updates from MS09-027 where applicable.; Remove unsupported legacy Office, Word Viewer, Compatibility Pack, and Mac converter installations.; Restrict opening Word documents from untrusted or external sources..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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CWE-787: Exact CWE lookup
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Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2009-0563 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- oval:org.mitre.oval:def:6133CVE reference · vdb-entry, signature
- MS09-027CVE reference · vendor-advisory, x_refsource_MS
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0563CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.