Exploitation evidence
Known exploited · CISA KEV listed
Added 2021-11-17. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2021-12-01. 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
Microsoft / Microsoft 365 Apps for Enterprise
Default status: Not specified
- affected: 16.0.1 to < https://aka.ms/OfficeSecurityReleases (custom)
Microsoft / Microsoft Excel 2013 Service Pack 1
Default status: Not specified
- affected: 15.0.0.0 to < 15.0.5397.1001 (custom)
Microsoft / Microsoft Excel 2016
Default status: Not specified
- affected: 16.0.0.0 to < 16.0.5239.1001 (custom)
Microsoft / Microsoft Office 2013 Service Pack 1
Default status: Not specified
- affected: 15.0.0 to < 15.0.5397.1001 (custom)
Microsoft / Microsoft Office 2016
Default status: Not specified
- affected: 16.0.0 to < 16.0.5239.1001 (custom)
Microsoft / Microsoft Office 2019
Default status: Not specified
- affected: 19.0.0 to < https://aka.ms/OfficeSecurityReleases (custom)
Microsoft / Microsoft Office 2019 for Mac
Default status: Not specified
- affected: 16.0.0 to < 16.55.21111400 (custom)
Microsoft / Microsoft Office LTSC 2021
Default status: Not specified
- affected: 16.0.1 to < https://aka.ms/OfficeSecurityReleases (custom)
Microsoft / Microsoft Office LTSC for Mac 2021
Default status: Not specified
- affected: 16.0.1 to < 16.55.21111400 (custom)
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
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": 0.43005,
"percentile": 0.98738
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.43005,
"percentile": 0.9873
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.43005,
"percentile": 0.98729
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.43005,
"percentile": 0.98728
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.43005,
"percentile": 0.98727
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.43005,
"percentile": 0.98726
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.43005,
"percentile": 0.98726
}05 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.43005,
"percentile": 0.98725
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.43005,
"percentile": 0.98723
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.43005,
"percentile": 0.98721
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2021-42292",
"cwes": [
"CWE-357"
],
"dateAdded": "2021-11-17",
"dueDate": "2021-12-01",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-42292",
"product": "Office",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "A security feature bypass vulnerability in Microsoft Excel would allow a local user to perform arbitrary code execution.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Excel Security Feature Bypass"
}