CVE-2015-20120

HighPublic PoC

Published: 16 March 2026

Published

16 March 2026

Modified

19 March 2026

KEV Added

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Patch

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CVSS Score 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

EPSS Score 0.0047 64.8th percentile

Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2015-20120 is a high-severity SQL Injection (CWE-89) vulnerability in Nextclickventures Realtyscript. Its CVSS base score is 8.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 35.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Validates all application parameters to prevent time-based blind SQL injection payloads from being executed against the database.

SI-2 Flaw Remediation good match

prevent

Remediates the specific SQL injection flaws in RealtyScript 4.0.2 through timely patching or code corrections to eliminate vulnerable parameters.

SC-7 Boundary Protection partial match

prevent

Deploys web application firewalls at system boundaries to inspect and block crafted HTTP requests containing SQL injection payloads.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1213.006 Databases Collection

Adversaries may leverage databases to mine valuable information.

attack.mitre.org →

Why these techniques?

The vulnerability is a SQL injection in a public-facing web application (T1190), enabling unauthenticated remote attackers to extract sensitive database information including credentials and user data (T1213.006).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

Next Click Ventures RealtyScript 4.0.2 contains multiple time-based blind SQL injection vulnerabilities that allow unauthenticated attackers to extract database information by injecting SQL code into application parameters. Attackers can craft requests with time-delay payloads to infer database contents character by…

character based on response timing differences.

Deeper analysisAI

CVE-2015-20120 affects Next Click Ventures RealtyScript 4.0.2 and consists of multiple time-based blind SQL injection vulnerabilities (CWE-89). These flaws exist in application parameters, where attackers can inject SQL code to extract database information. The vulnerability enables inference of data through crafted requests using time-delay payloads, with responses revealing contents character by character based on timing differences. It carries a CVSS v3.1 base score of 8.2 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).

Unauthenticated attackers can exploit these vulnerabilities remotely over the network with low attack complexity, requiring no privileges or user interaction. Exploitation involves sending specially crafted HTTP requests to affected parameters, observing response delays to exfiltrate sensitive database information such as credentials, user data, or configuration details. This results in high confidentiality impact by disclosing database contents and low integrity impact through potential minor data manipulation, while availability remains unaffected.

Advisories detailing the vulnerabilities and proof-of-concept exploits are available at https://www.exploit-db.com/exploits/38497, https://www.vulncheck.com/advisories/realtyscript-multiple-time-based-blind-sql-injection, and https://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5270.php. These resources provide further technical details on affected endpoints and exploitation techniques, though no vendor patches are referenced in the CVE publication dated 2026-03-16.