Exploitation evidence
Known exploited · CISA KEV listed
Added 2021-11-03. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2021-11-17. 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 / Access Manager.
Default status: Not specified
- affected: All version prior version 5.0.
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": 0.25695,
"percentile": 0.97993
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.25695,
"percentile": 0.97981
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.25695,
"percentile": 0.97979
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.25695,
"percentile": 0.97979
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.25695,
"percentile": 0.97978
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.25695,
"percentile": 0.97975
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.25695,
"percentile": 0.97973
}06 Nov 2026, 00:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
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}
],
"title": "CVE Program Container"
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{
"metrics": [
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-22506",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-06T20:51:43.024883Z",
"version": "2.0.3"
},
"type": "ssvc"
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},
{
"other": {
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],
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"shortName": "CISA-ADP"
},
"references": [
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"tags": [
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],
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}
],
"timeline": [
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"lang": "en",
"time": "2021-11-03T00:00:00.000Z",
"value": "CVE-2021-22506 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Access Manager.",
"vendor": "n/a",
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"status": "affected",
"version": "All version prior version 5.0."
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Advance configuration exposing Information Leakage vulnerability in Micro Focus Access Manager product, affects all versions prior to version 5.0. The vulnerability could cause information leakage."
}
],
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"description": "Information Leakage",
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}
],
"providerMetadata": {
"dateUpdated": "2021-03-26T13:37:22.000Z",
"orgId": "f81092c5-7f14-476d-80dc-24857f90be84",
"shortName": "microfocus"
},
"references": [
{
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],
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}
],
"x_legacyV4Record": {
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"ASSIGNER": "security@microfocus.com",
"ID": "CVE-2021-22506",
"STATE": "PUBLIC"
},
"affects": {
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{
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"version": {
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}
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},
"data_format": "MITRE",
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"description": {
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{
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"problemtype": {
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"references": {
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}
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},
"cveMetadata": {
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"assignerShortName": "microfocus",
"cveId": "CVE-2021-22506",
"datePublished": "2021-03-26T13:37:22.000Z",
"dateReserved": "2021-01-05T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:51.576Z",
"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": 0.25695,
"percentile": 0.97972
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.25695,
"percentile": 0.97968
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.25695,
"percentile": 0.97966
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2021-22506",
"cwes": [],
"dateAdded": "2021-11-03",
"dueDate": "2021-11-17",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-22506",
"product": "Micro Focus Access Manager",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Micro Focus Access Manager contains an information leakage vulnerability resulting from a SAML service provider redirection issue when the Assertion Consumer Service URL is used.",
"vendorProject": "Micro Focus",
"vulnerabilityName": "Micro Focus Access Manager Information Leakage Vulnerability"
}