Which versions of BIG-IP PEM are affected by EUVD-2026-29984?

CVE-2026-41218 is a remote denial-of-service vulnerability in F5 BIG-IP Policy Enforcement Manager that allows unauthenticated attackers to crash the Traffic Management Microkernel through specially…. A patch is available.

BIG-IP PEM EUVD-2026-29984

Q: What is the CVSS score of EUVD-2026-29984?

EUVD-2026-29984 has a CVSS 4.0 base score of 8.7 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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:X. EPSS exploitation probability: 0.1%.

| CVE-2026-41218 HIGH

Use After Free (CWE-416)

2026-05-13 f5

GHSA-65gg-93p6-xmj9

Information Disclosure Use After Free Memory Corruption

8.7

CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Re-analysis Queued

May 13, 2026 - 16:22 vuln.today

cvss_changed

CVSS changed

May 13, 2026 - 16:22 NVD

7.5 (HIGH) 8.7 (HIGH)

Analysis Generated

May 13, 2026 - 15:46 vuln.today

CVE Published

May 13, 2026 - 14:12 nvd

HIGH 7.5

DescriptionNVD

When BIG-IP PEM iRules are configured on a virtual server (iRules using commands starting with CLASSIFICATION::, CLASSIFY::, PEM::, PSC::, and the urlcatquery command), undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

AnalysisAI

Remote denial-of-service in F5 BIG-IP Policy Enforcement Manager (PEM) allows unauthenticated attackers to crash the Traffic Management Microkernel (TMM) via undisclosed traffic patterns when PEM-specific iRules are configured on a virtual server. The vulnerability is a use-after-free memory corruption issue (CWE-416) affecting CLASSIFICATION::, CLASSIFY::, PEM::, PSC::, and urlcatquery iRule commands. …

RemediationAI

Within 24 hours: Identify all F5 BIG-IP systems running PEM with iRule commands (CLASSIFICATION::, CLASSIFY::, PEM::, PSC::, urlcatquery) enabled via configuration audit. Within 7 days: Apply vendor patch K000160875 per F5 advisory to all affected BIG-IP PEM instances, staging in non-production first. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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EUVD-2026-29984 vulnerability details – vuln.today

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BIG-IP PEM EUVD-2026-29984

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

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BIG-IP PEM EUVD-2026-29984

CVSS VectorNVD

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External POC / Exploit Code