CVE-2015-20121
RealtyScript 4.0.2 SQL Injection via u_id and agent Parameters
Description
Next Click Ventures RealtyScript 4.0.2 contains SQL injection vulnerabilities that allow unauthenticated attackers to manipulate database queries by injecting arbitrary SQL code through the GET parameter 'u_id' in /admin/users.php and the POST parameter 'agent[]' in /admin/mailer.php. Attackers can exploit time-based blind SQL injection techniques to extract sensitive database information or cause denial of service through sleep-based payloads.
INFO
Published Date :
March 16, 2026, 2:17 p.m.
Last Modified :
March 18, 2026, 3:24 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Apply vendor updates for RealtyScript.
- Sanitize all user inputs for SQL queries.
- Use parameterized queries or prepared statements.
- Restrict database user privileges.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2015-20121.
| URL | Resource |
|---|---|
| http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5270.php | Exploit Third Party Advisory |
| https://www.exploit-db.com/exploits/38497 | Exploit Third Party Advisory VDB Entry |
| https://www.vulncheck.com/advisories/realtyscript-sql-injection-via-u-id-and-agent-parameters | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2015-20121 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2015-20121
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2015-20121 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2015-20121 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 18, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:nextclickventures:realtyscript:4.0.2:*:*:*:*:*:*:* Added Reference Type VulnCheck: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5270.php Types: Exploit, Third Party Advisory Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/38497 Types: Exploit, Third Party Advisory, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/realtyscript-sql-injection-via-u-id-and-agent-parameters Types: Third Party Advisory -
New CVE Received by [email protected]
Mar. 16, 2026
Action Type Old Value New Value Added Description Next Click Ventures RealtyScript 4.0.2 contains SQL injection vulnerabilities that allow unauthenticated attackers to manipulate database queries by injecting arbitrary SQL code through the GET parameter 'u_id' in /admin/users.php and the POST parameter 'agent[]' in /admin/mailer.php. Attackers can exploit time-based blind SQL injection techniques to extract sensitive database information or cause denial of service through sleep-based payloads. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Added CWE CWE-89 Added Reference http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5270.php Added Reference https://www.exploit-db.com/exploits/38497 Added Reference https://www.vulncheck.com/advisories/realtyscript-sql-injection-via-u-id-and-agent-parameters