F5 BIG-IP Advanced WAF ASM up to 17.1.2/17.5.0 URL improper validation of specified quantity in input

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.3 | $0-$5k | 0.00 |
Summary
A vulnerability was found in F5 BIG-IP Advanced WAF ASM up to 17.1.2/17.5.0 and classified as problematic. This affects an unknown part of the component URL Handler. Such manipulation leads to improper validation of specified quantity in input. This vulnerability is uniquely identified as CVE-2025-61938. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.
Details
A vulnerability, which was classified as problematic, has been found in F5 BIG-IP Advanced WAF ASM up to 17.1.2/17.5.0. Affected by this issue is an unknown code of the component URL Handler. The manipulation with an unknown input leads to a improper validation of specified quantity in input vulnerability. Using CWE to declare the problem leads to CWE-1284. The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties. Impacted is availability. CVE summarizes:
When a BIG-IP Advanced WAF or ASM security policy is configured with a URL greater than 1024 characters in length for the Data Guard Protection Enforcement setting, either manually or through the automatic Policy Builder, the bd process can terminate repeatedly. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
The advisory is available at my.f5.com. This vulnerability is handled as CVE-2025-61938 since 10/04/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.
The vulnerability scanner Nessus provides a plugin with the ID 270603 (F5 Networks BIG-IP : BIG-IP Advanced WAF and ASM bd process vulnerability (K000156624)), which helps to determine the existence of the flaw in a target environment.
Upgrading to version 17.1.3 or 17.5.1 eliminates this vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (270603). If you want to get best quality of vulnerability data, you may have to visit VulDB.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://f5.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 6.4VulDB Meta Temp Score: 6.3
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 7.5
CNA Vector: 🔒
CVSSv2
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Improper validation of specified quantity in inputCWE: CWE-1284 / CWE-703
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
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Nessus ID: 270603
Nessus Name: F5 Networks BIG-IP : BIG-IP Advanced WAF and ASM bd process vulnerability (K000156624)
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔒
Upgrade: BIG-IP Advanced WAF ASM 17.1.3/17.5.1
Timeline
10/04/2025 CVE reserved10/15/2025 Advisory disclosed
10/15/2025 VulDB entry created
10/17/2025 VulDB entry last update
Sources
Vendor: f5.comAdvisory: K000156624
Status: Confirmed
CVE: CVE-2025-61938 (🔒)
GCVE (CVE): GCVE-0-2025-61938
GCVE (VulDB): GCVE-100-328682
Entry
Created: 10/15/2025 16:09Updated: 10/17/2025 06:19
Changes: 10/15/2025 16:09 (76), 10/17/2025 06:19 (2)
Complete: 🔍
Cache ID: 216:CE7:103
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