Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-01-07. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: 2026-01-28. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
n/a / n/a
Default status: Not specified
- affected: n/a
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- http://www.zerodayinitiative.com/advisories/ZDI-09-019
- http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspx
- http://www.vupen.com/english/advisories/2009/1290
- http://osvdb.org/53182
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49632
- http://www.securityfocus.com/bid/34351
- http://www.vupen.com/english/advisories/2009/0915
- http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspx
- http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279
- http://secunia.com/advisories/34572
- http://www.securitytracker.com/id?1021967
- http://www.us-cert.gov/cas/techalerts/TA09-132A.html
- http://www.microsoft.com/technet/security/advisory/969136.mspx
- http://www.kb.cert.org/vuls/id/627331
- http://www.securityfocus.com/archive/1/503453/100/0/threaded
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6204
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0556
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
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}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
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}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
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}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.67312,
"percentile": 0.9931
}08 Nov 2026, 00:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.67312,
"percentile": 0.99309
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.67312,
"percentile": 0.99308
}05 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.67312,
"percentile": 0.99307
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.67312,
"percentile": 0.99307
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.67312,
"percentile": 0.99305
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.67312,
"percentile": 0.99304
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2009-0556",
"cwes": [
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"dateAdded": "2026-01-07",
"dueDate": "2026-01-28",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0556",
"product": "Office",
"requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
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"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Office PowerPoint Code Injection Vulnerability"
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