# CVE-2026-41227: On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can result in an increase in…

Source: https://junglewise.ai/threats/cve-2026-41227-on-an-http-2-virtual-server-with-layer-7-dos-protection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-13  
License: CC BY 4.0 with a link back

CVE-2026-41227 · Severity: high · CVSS 7.5 · Published 2026-05-13

On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can result in an increase in memory consumption causing the Traffic Management Microkernel (TMM) process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Technologies: [F5 BIG-IP](https://junglewise.ai/threats/technologies/big-ip). Vendors: [F5](https://junglewise.ai/threats/vendors/f5).

## Quick answers

**Is CVE-2026-41227 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-41227 being exploited in the wild.

**How severe is CVE-2026-41227?** High severity, with a CVSS score of 7.5, published 13 May 2026.

**Which products and versions are affected?** F5 BIG-IP Not specified (EoTS versions excluded).

**Is there a fix for CVE-2026-41227?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-41227?** Check whether you run F5 BIG-IP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- F5 BIG-IP Not specified (EoTS versions excluded)

## Related threats

- [F5 BIG-IP privilege escalation in TMUI](https://junglewise.ai/threats/cve-2026-66842-f5-big-ip-privilege-escalation-in-tmui)
- [F5 BIG-IP Configuration utility error message spoofing](https://junglewise.ai/threats/cve-2026-63020-f5-big-ip-configuration-utility-error-message-spoofing)
- [F5 BIG-IP denial of service in HTTP/2 profile memory management](https://junglewise.ai/threats/cve-2026-59762-f5-big-ip-denial-of-service-in-http-2-profile-memory-management)
- [F5 BIG-IP and BIG-IQ incorrect permission assignment in tmsh and iControl REST](https://junglewise.ai/threats/cve-2026-42937-f5-big-ip-and-big-iq-incorrect-permission-assignment-in-tmsh-and)
- [F5 BIG-IP Appliance mode restriction bypass via path traversal](https://junglewise.ai/threats/cve-2026-42930-f5-big-ip-appliance-mode-restriction-bypass-via-path-traversal)