CVE-2026-94127

criticalpriority · act · 90OT risk · criticalKEV · exploitedEU KEV · ENISAEPSS 0.022 · 83 %ileexploit · PoCDENLUS
grimoire priorityP0 · Act now
Exploitable?
Yes · in the wild
CISA KEV · 2 exploits · PoC
Likely / severe?
2.23% (83rd) EPSS
CVSS 9.8 · critical
Is it mine?
10 products
Check your exposure
Who says so?
3 sources
cert_bund · ncsc_nl · nvd

added 2026-09-22remediate by 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.

EU KEVflagged by ENISAreported 2026-09-22

Unauthenticated RCE vulnerability present when BIG-IP APM is configured as an OAuth Authorization Server.

EPSS · scored 2026-10-22

F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability

When a BIG-IP APM access policy and an OAuth profile are configured on a virtual server, specific malicious traffic can lead to remote code execution (RCE). This vulnerability is only present when BIG-IP APM is configured as an OAuth Authorization Server. Deployments using APM strictly as an OAuth Client / Resource Server (without OAuth authorization server profiles configured) are not affected by this vulnerability. Impact: This vulnerability allows an unauthenticated attacker to perform remote code execution. The BIG-IP system in Appliance mode is also vulnerable. This is a data plane issue; there is no control plane exposure. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · f5sirt@f5.comexploitability 3.9 · impact 5.9
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · f5sirt@f5.com
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-122USCWE-122US
04

exploits (2)

Public proof-of-concept and weaponised exploit code.

05

affected products (10)

Products and version ranges known to be affected.

06

advisories (2)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0386Kwetsbaarheid verholpen in F5 Networks BIG-IP Access Policy ManagerNL2026-09-22csaf · ncsc_nlNL

    F5 Networks heeft een kwetsbaarheid verholpen in BIG-IP Access Policy Manager (APM).

  • WID-SEC-W-2026-3517F5 BIG-IP APM: Schwachstelle ermöglicht CodeausführungDeutsch2026-09-22csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in F5 BIG-IP APM ausnutzen, um beliebigen Programmcode auszuführen.

07

sources

Which sources assert this record, and when.

cert_bundncsc_nlnvdNVDCVE.orgMITRE
published 2026-09-22modified 2026-09-23
08

references (2) nvd

External citations — patches, advisories, analysis.

scry

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