CISA's September 25th Remediation Deadline for F5 BIG-IP APM's OAuth Profile Heap Overflow Has Passed; Covered Entities Running Affected Virtual Servers Are Out of Compliance

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-94127

Key Details

CVE	CVE-2026-94127
Vulnerability Name	F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability
Affected products	F5 BIG-IP APM
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-122 (Heap-based Buffer Overflow)
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-09-22.
Exploitation prediction (EPSS)	2.23% probability of exploitation in the next 30 days (82% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-09-25 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
F5	BIG-IP APM

Vendor

Product

Affected Versions

Patch Status

BIG-IP APM

Subsystems	General OT
Sectors	Multiple

What to Know

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.

What to Do

Monitor F5's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-94127
CVE	https://www.cve.org/CVERecord?id=CVE-2026-94127

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-94127

CVE

https://www.cve.org/CVERecord?id=CVE-2026-94127

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-09-22
Required Action Due Date	2026-09-25
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.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-09-22

Required Action Due Date

2026-09-25

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.