Acunetix Web Vulnerability Scanner (WVS) 4.0 Build 20060717 and earlier allows remote attackers to cause a denial of service (application crash) via multiple HTTP requests containing invalid Content-Length values.
Conclusion & alert: CVE-2007-0120 is rated Exploit Available (50/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.91%). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 3078 | exploit_db | edb | 2007-01-04 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-22 | 1.00% | 0.91% | -0.09% |
| 2 | 2026-03-25 | 1.27% | 1.00% | -0.27% |
| 3 | 2025-09-23 | — | 1.27% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 1.9 | 2.0 | LOW |
|
3.4 | 2.9 | [email protected] |
Information about HTTP Sniffer: The HTTP Sniffer is an in-build proxy server in Acunetix WVS which purpose is to analyse web traffic between a web client (browser) and a web server. By default this tool is not enabled and when enabled it accepts traffic only from the same computer running Acunetix WVS (Localhost). The default TCP port used in 8080. This means that when the HTTP Sniffer is enabled, it is only enabled on the local network interface and no one from the network can access the HTTP Sniffer port. How the exploit works: The exploit works by sending a specially crafted packet containing an invalid Content-Length field in the HTTP header to the TCP port on which the HTTP Sniffer is listening. This causes the application to crash (Denial of Service). Since the HTTP Sniffer component by default is enabled only on the local network interface, it is not possible to take advantage of this exploit remotely. The user has to manually change the listening interface from within the application’s configuration to make the HTTP Sniffer available on the network for this exploit to work remotely. Solution: Upgrade to the latest version of Acunetix WVS (v4.0 build 20060717 or later)
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| acunetix | web_vulnerability_scanner | <= 4.0_build_2006-07-17 | cpe:2.3:a:acunetix:web_vulnerability_scanner:*:*:*:*:*:*:*:* |