Exploitation evidence
Known exploited · CISA KEV listed
Added 2022-09-30. Ransomware campaign use: Known.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2022-10-21. 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 Exchange Server 2013 Cumulative Update 23
Default status: Not specified
- affected: 15.00.0 to < 15.00.1497.044 (custom)
Microsoft / Microsoft Exchange Server 2016 Cumulative Update 22
Default status: Not specified
- affected: 15.0.0 to < 15.01.2375.037 (custom)
Microsoft / Microsoft Exchange Server 2019 Cumulative Update 11
Default status: Not specified
- affected: 15.02.0 to < 15.02.0986.036 (custom)
Microsoft / Microsoft Exchange Server 2019 Cumulative Update 12
Default status: Not specified
- affected: 15.02.0 to < 15.02.1118.020 (custom)
Microsoft / Microsoft Exchange Server 2016 Cumulative Update 23
Default status: Not specified
- affected: 15.01.0 to < 15.01.2507.016 (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
CVE Program record ↗ · Download tracked evidence as JSON
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41040
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41040
- https://www.kb.cert.org/vuls/id/915563
- http://packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.html
- https://www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41040
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": 0.99956,
"percentile": 0.99975
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.99956,
"percentile": 0.99974
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.99956,
"percentile": 0.99974
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.99956,
"percentile": 0.99974
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.99956,
"percentile": 0.99974
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.99956,
"percentile": 0.99974
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.99956,
"percentile": 0.99974
}05 Nov 2026, 00:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
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"x_transferred"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41040"
},
{
"name": "VU#915563",
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],
"url": "https://www.kb.cert.org/vuls/id/915563"
},
{
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],
"url": "http://packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.html"
},
{
"tags": [
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],
"url": "https://www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days/"
}
],
"title": "CVE Program Container"
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{
"metrics": [
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"id": "CVE-2022-41040",
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{
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},
{
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"timestamp": "2024-02-23T21:11:09.910371Z",
"version": "2.0.3"
},
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},
{
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"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41040"
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],
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],
"cna": {
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],
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"product": "Microsoft Exchange Server 2016 Cumulative Update 22",
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{
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}
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],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
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},
{
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],
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"descriptions": [
{
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],
"metrics": [
{
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
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},
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],
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},
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}
],
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"cveMetadata": {
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"dateReserved": "2022-09-19T00:00:00.000Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.99956,
"percentile": 0.99974
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.99956,
"percentile": 0.99975
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.99956,
"percentile": 0.99975
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2022-41040",
"cwes": [
"CWE-918"
],
"dateAdded": "2022-09-30",
"dueDate": "2022-10-21",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Known",
"notes": "https://msrc-blog.microsoft.com/2022/09/29/customer-guidance-for-reported-zero-day-vulnerabilities-in-microsoft-exchange-server/; https://nvd.nist.gov/vuln/detail/CVE-2022-41040",
"product": "Exchange Server",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Microsoft Exchange Server allows for server-side request forgery. Dubbed \"ProxyNotShell,\" this vulnerability is chainable with CVE-2022-41082 which allows for remote code execution.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Exchange Server Server-Side Request Forgery Vulnerability"
}