CVE-2015-4638 Denial of service in n/a

What is CVE-2015-4638?

CVE-2015-4638 is a medium-severity denial of service vulnerability in F5 Big-Ip Advanced Firewall Manager, published on 18 Sep 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The FastL4 virtual server in F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, GTM, Link Controller, and PEM 11.3.0 through 11.5.2 and 11.6.0 through 11.6.0 HF4, BIG-IP Edge Gateway, WebAccelerator, and WOM 11.2.1 through 11.3.0, and BIG-IP PSM 11.2.1 through 11.4.1 allows remote attackers to cause a denial of service (Traffic Management Microkernel restart) via a fragmented packet.

Weakness: CWE-20

Which versions are affected by CVE-2015-4638?

It affects 10 products.

Products include F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Security Manager, F5 Big-Ip Edge Gateway, F5 Big-Ip Global Traffic Manager, F5 Big-Ip Link Controller and 4 more.

How do I fix CVE-2015-4638?

No fix has been published for CVE-2015-4638 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-4638 being exploited?

There is no known exploitation of CVE-2015-4638 in the wild and no public exploit code.

Other vulnerabilities in F5 Big-Ip Advanced Firewall Manager

• CVE-2021-23040 SQL injection in BIG-IP AFM High 8.8
• CVE-2025-59478 BIG-IP AFM DoS protection profile vulnerability High 8.7
• CVE-2025-24312 BIG-IP AFM vulnerability High 8.7
• CVE-2019-6636 Cross-site scripting in BIG-IP (AFM, ASM) High 8.4
• CVE-2024-21763 BIG-IP AFM vulnerability High 7.5

All F5 Big-Ip Advanced Firewall Manager vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-72v7-922f-7x9p.