VDB-375935 · CVE-2026-4770 · GCVE-0-2026-4770

TR7 Cyber Defense WAF-ASP prior 1.4.0.117 Web Application Firewall cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.0	$0-$5k	0.69

Summaryinfo

A vulnerability was found in TR7 Cyber Defense WAF-ASP. It has been rated as problematic. Affected is an unknown function of the component Web Application Firewall. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-4770. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in TR7 Cyber Defense WAF-ASP and classified as problematic. This issue affects an unknown function of the component Web Application Firewall. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in TR7 Cyber Defense Inc. Web Application Firewall allows DOM-Based XSS. This issue affects Web Application Firewall: from v1.0.42.239 before v1.4.0.117.

The weakness was published by Serhat Yapici. It is possible to read the advisory at siberguvenlik.gov.tr. The identification of this vulnerability is CVE-2026-4770 since 03/24/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 1.4.0.117 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

TR7 Cyber Defense

Name

WAF-ASP

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.6
CNA Vector (TR-CERT): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: WAF-ASP 1.4.0.117

Timelineinfo

03/24/2026 CVE reserved
07/02/2026 +99 days Advisory disclosed
07/02/2026 +0 days VulDB entry created
07/02/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: siberguvenlik.gov.tr
Researcher: Serhat Yapici
Status: Confirmed

CVE: CVE-2026-4770 (🔒)
GCVE (CVE): GCVE-0-2026-4770
GCVE (VulDB): GCVE-100-375935

Entryinfo

Created: 07/02/2026 16:58
Changes: 07/02/2026 16:58 (64)
Complete: 🔍
Cache ID: 216::103