Exploitation evidence
Known exploited · CISA KEV listed
Added 2022-03-28. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2022-04-18. 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.us-cert.gov/cas/techalerts/TA12-346A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16073
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-2539
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.
{
"date": "2026-11-12",
"epss": 0.53033,
"percentile": 0.98993
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.53033,
"percentile": 0.98987
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.53033,
"percentile": 0.98985
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.53033,
"percentile": 0.98985
}08 Nov 2026, 00:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
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"dateUpdated": "2024-08-06T19:34:25.771Z",
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"references": [
{
"name": "TA12-346A",
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"x_refsource_CERT",
"x_transferred"
],
"url": "http://www.us-cert.gov/cas/techalerts/TA12-346A.html"
},
{
"name": "MS12-079",
"tags": [
"vendor-advisory",
"x_refsource_MS",
"x_transferred"
],
"url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079"
},
{
"name": "oval:org.mitre.oval:def:16073",
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}
],
"title": "CVE Program Container"
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{
"metrics": [
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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"options": [
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{
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],
"role": "CISA Coordinator",
"timestamp": "2025-02-10T19:01:25.331995Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
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],
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],
"providerMetadata": {
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],
"timeline": [
{
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"time": "2022-03-28T00:00:00.000Z",
"value": "CVE-2012-2539 added to CISA KEV"
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],
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{
"lang": "en",
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"dateUpdated": "2018-10-12T19:57:01.000Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
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},
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{
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],
"url": "http://www.us-cert.gov/cas/techalerts/TA12-346A.html"
},
{
"name": "MS12-079",
"tags": [
"vendor-advisory",
"x_refsource_MS"
],
"url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079"
},
{
"name": "oval:org.mitre.oval:def:16073",
"tags": [
"vdb-entry",
"signature",
"x_refsource_OVAL"
],
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16073"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "secure@microsoft.com",
"ID": "CVE-2012-2539",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
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"version_data": [
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},
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},
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{
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},
{
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{
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},
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"dateReserved": "2012-05-09T00:00:00.000Z",
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"state": "PUBLISHED"
},
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"dataVersion": "5.1"
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.53033,
"percentile": 0.98985
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.53033,
"percentile": 0.98984
}05 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.53033,
"percentile": 0.98982
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.53033,
"percentile": 0.98981
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.53033,
"percentile": 0.9898
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.53033,
"percentile": 0.98978
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2012-2539",
"cwes": [
"CWE-399"
],
"dateAdded": "2022-03-28",
"dueDate": "2022-04-18",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2012-2539",
"product": "Word",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Microsoft Word allows attackers to execute remote code or cause a denial-of-service (DoS) via crafted RTF data.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Word Remote Code Execution Vulnerability"
}