Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-09-22. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date: 2026-09-25. 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
F5 / BIG-IP
Default status: unknown
- affected: 21.1.0 to < Hotfix-BIGIP-21.1.0.2.0.30.22-ENG (custom)
- affected: 17.5.0 to < Hotfix-BIGIP-17.5.1.9.0.160.12-ENG (custom)
- affected: 17.1.0 to < Hotfix-BIGIP-17.1.3.5.0.41.14-ENG (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.
Reported workarounds: An iRule is available upon request. Open a ticket with F5 support to request this.
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": 0.2655,
"percentile": 0.9804
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.2655,
"percentile": 0.98029
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.2655,
"percentile": 0.98027
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.2655,
"percentile": 0.98027
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.2655,
"percentile": 0.98026
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.2655,
"percentile": 0.98024
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.2655,
"percentile": 0.98023
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.2655,
"percentile": 0.98021
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.2655,
"percentile": 0.98018
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.2655,
"percentile": 0.98016
}03 Nov 2026, 02:22 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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"id": "CVE-2026-94127",
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"timestamp": "2026-09-22T00:00:00+00:00",
"version": "2.0.3"
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"type": "ssvc"
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"content": {
"dateAdded": "2026-09-22",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-94127"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"time": "2026-09-22T00:00:00.000Z",
"value": "CVE-2026-94127 added to CISA KEV"
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"title": "CISA ADP Vulnrichment"
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"cna": {
"affected": [
{
"defaultStatus": "unknown",
"modules": [
"APM"
],
"product": "BIG-IP",
"vendor": "F5",
"versions": [
{
"lessThan": "Hotfix-BIGIP-21.1.0.2.0.30.22-ENG",
"status": "affected",
"version": "21.1.0",
"versionType": "custom"
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{
"lessThan": "Hotfix-BIGIP-17.5.1.9.0.160.12-ENG",
"status": "affected",
"version": "17.5.0",
"versionType": "custom"
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{
"lessThan": "Hotfix-BIGIP-17.1.3.5.0.41.14-ENG",
"status": "affected",
"version": "17.1.0",
"versionType": "custom"
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"datePublic": "2026-09-22T14:00:00.000Z",
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"impacts": [
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"capecId": "CAPEC-100",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"format": "CVSS",
"scenarios": [
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"value": "GENERAL"
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},
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"cvssV4_0": {
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
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"problemTypes": [
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"description": "CWE-122 Heap-based Buffer Overflow",
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"url": "https://my.f5.com/manage/s/article/K000162605"
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],
"source": {
"discovery": "INTERNAL"
},
"title": "BIG-IP APM OAuth vulnerability",
"workarounds": [
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"value": "An iRule is available upon request.<br>Open a ticket with F5 support to request this."
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"value": "An iRule is available upon request.\nOpen a ticket with F5 support to request this."
}
],
"x_generator": {
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"cveMetadata": {
"assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
"assignerShortName": "f5",
"cveId": "CVE-2026-94127",
"datePublished": "2026-09-22T14:17:42.730Z",
"dateReserved": "2026-09-20T17:39:19.975Z",
"dateUpdated": "2026-09-23T03:55:44.614Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-94127",
"cwes": [
"CWE-122"
],
"dateAdded": "2026-09-22",
"dueDate": "2026-09-25",
"forensicTriage": "Yes",
"knownRansomwareCampaignUse": "Unknown",
"notes": "For temporary mitigation to allow for proactive forensic triage, apply the vendor-provided iRule. Once completed, install the final vendor patch as soon as possible. For more information please see: https://my.f5.com/manage/s/article/K000162605 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-94127",
"product": "BIG-IP APM",
"requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
"shortDescription": "F5 BIG-IP APM contains a heap-based buffer overflow vulnerability when access policy and an OAuth profile are configured on a virtual server. This vulnerability could allow an unauthenticated attacker to perform remote code execution.",
"vendorProject": "F5",
"vulnerabilityName": "F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability"
}