CVE-2025-23176

Executive Summary

CVE-2025-23176 is an unauthenticated SQL injection vulnerability assigned to the Tecnick vendor, classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). With a CVSS score of 8.8 (High), the vulnerability carries critical potential for complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H) without requiring authentication or user interaction. The attack surface is network-exposed (AV:N) with Low attack complexity (AC:L), making it trivially exploitable by remote attackers. Any organization running affected Tecnick software — with the vendor recommending upgrade to version 16.3.5 or later — should treat this as a priority for remediation. There are no disclosed affected version ranges or workarounds, and while public PoC exists, no Nuclei template or exploit code has been released.

Technical Analysis

The vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'). This flaw class arises when a software application constructs dynamic SQL queries by concatenating user-controlled input into query strings without proper sanitization, escaping, or parameterization. An attacker can inject crafted SQL syntax — such as single quotes, comment markers, UNION operators, or stacked queries — to alter the intended query logic.

The NVD description for CVE-2025-23176 is minimal, providing only the vulnerability classification. No function names, parameters, endpoints, or specific query structures are disclosed in the CNA title or NVD description. The attack mechanism, therefore, must be described at the vulnerability-class level. The CNA title "Tecnick – CWE-89" and the vendor fix recommendation (upgrade to 16.3.5 or later) indicate the affected product is part of the Tecnick software suite.

Given the CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U), the vulnerable component is remotely accessible, does not require authentication, and does not require user interaction. The low attack complexity means the exploitation does not depend on race conditions, exotic timing, or specialized conditions. The vulnerability likely resides in a web-facing interface where user-supplied parameters are fed into backend database queries — a common pattern in CMS plugins, API endpoints, or administrative dashboards.

Notably, the affected versions list is empty and no OSV package references exist, meaning the exact scope of affected deployments is unclear. Patch confidence is 2/4 (CLAIMED), indicating only a single source (the CNA) claims a patch exists, without independent confirmation. This creates uncertainty regarding both the precise affected version range and the efficacy of the vendor's fix.

Exploitation Scenarios

The attack chain for CVE-2025-23176 is inferred from the vulnerability class since no specific implementation details are disclosed. The following scenario outlines how an attacker would proceed:

1) Reconnaissance / Target Identification: The attacker scans for internet-facing services associated with Tecnick software. Given the product line is not fully disclosed, the attacker would likely target any web application that identifies itself as Tecnick-related — via HTTP response headers, administrative login pages, or default banner strings. Shodan and other internet-wide scanning tools could be used to enumerate hosts running the vulnerable version.

2) Triggering the Flaw: The attacker sends crafted HTTP requests containing SQL injection payloads in parameter values that are processed by the backend SQL engine. Since no authentication is required (PR:N), the injection likely occurs in an unauthenticated handler — possibly login pages, search functionality, or API parameters. The attacker appends SQL metacharacters (e.g., a single quote followed by logical operators) to escape the intended query context.

3) Payload / Execution Method: At the vulnerability-class level, the attacker would employ techniques revealed by how the application processes the injected SQL. Because the NVD description reveals no specific parameters, the attacker would use generic payloads such as:

• ' OR 1=1 -- to bypass authentication or authorization checks
• UNION SELECT statements to extract data from other tables
• Time-based or boolean-based blind injection payloads (' AND SLEEP(5) --) if the application does not return overt errors
• '; DROP TABLE ...; -- for stacked queries, if supported by the database backend

4) Post-Exploitation Impact: With full database access (C:H/I:H/A:H), the attacker can extract sensitive records — credentials, session tokens, personal data, or intellectual property. The injected SQL can also be leveraged to write files to the server (via SELECT ... INTO OUTFILE in MySQL, for instance) to achieve remote code execution, or to corrupt data and bring down database-dependent services.

No public PoC is available and no exploit code has been published; the attack chain is inferred from the vulnerability class. However, given the public PoC status and the high CVSS score, active exploitation is plausible in the near term.

Impact Assessment

The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H yields a base score of 8.8 (High). The key characteristics:

• Confidentiality Impact (C:H): An attacker can read any data available to the SQL queries — potentially the entire database backend.
• Integrity Impact (I:H): An attacker can modify or delete database records, update row values, or inject new rows, corrupting application data at scale.
• Availability Impact (A:H): Database abuse or targeted data deletion can render the application unreliable or fully unavailable.
• No Authentication (PR:N) and No User Interaction (UI:N): The attack requires no pre-existing access and no victim involvement, making it highly automatable.
• Network Attack Vector (AV:N): The vulnerability is exploitable remotely over the network, exponentially increasing the blast radius.

Business impact extends beyond direct database compromise. In a CompTIA-style "blast radius" assessment, affected systems include any internet-facing Tecnick application. The lack of an affected version list means enterprises cannot definitively assess exposure without vendor confirmation. Organizations using Tecnick products should assume exposure until proven otherwise.

The EPSS score of 0.00451 (37th percentile) suggests the vulnerability is not yet widely exploited in the wild relative to other CVEs. However, EPSS is a probability-based metric and low scores do not diminish the technical severity — attackers often adopt vulnerabilities in waves, and unauthenticated SQLi with a C:H/I:H/A:H profile is a prime candidate for inclusion in automated exploitation tooling.

Detection Guidance

Detecting exploitation of CVE-2025-23176 requires monitoring for anomalous SQL syntax in HTTP request parameters, abnormal database query behavior, and unexpected database response patterns. The following detection rules are tailored to this vulnerability class and should be tuned to the environment; false positives are expected given the broad nature of SQLi signatures.

Sigma Rule

title: SQL Injection Attempt Against Tecnick Web Application
id: c0dc0d1e-3a2b-4c5d-8e9f-0a1b2c3d4e5f
status: experimental
description: Detects common SQL injection payloads in HTTP request parameters targeting Tecnick software, referencing CVE-2025-23176.
references:
    - https://nvd.nist.gov/vuln/detail/CVE-2025-23176
author: Valters IT Security Team
date: 2025/01/01
logsource:
    category: webserver
    product: generic
detection:
    selection:
        cs-method:
            - GET
            - POST
        cs-uri-query|contains:
            - "' OR '1'='1"
            - "' OR 1=1--"
            - "UNION%20SELECT"
            - "UNION ALL SELECT"
            - "SLEEP("
            - "BENCHMARK("
            - "WAITFOR%20DELAY"
            - "pg_sleep("
            - "/*!?*\\"  # MySQL family marker
            - "CHAR("
            - "CONVERT("
            - "0x"  # Hexadecimal encoding
    condition: selection
falsepositives:
    - Legitimate use of SQL keywords in search queries or parametric URLs
    - Security scanners performing benign probing
    - Application frameworks that URL-encode apostrophes
level: high

YARA Rule

rule CVE_2025_23176_Tecnick_SQLi_Scan
{
    meta:
        description = "Detects HTTP request patterns characteristic of SQL injection attempts targeting Tecnick software (CVE-2025-23176)"
        author = "Valters IT Security Team"
        date = "2025-01-01"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2025-23176"
        severity = "high"
    strings:
        $a = "' OR 1=1" ascii nocase
        $b = "' OR '1'='1" ascii nocase
        $c = "UNION SELECT" ascii nocase
        $d = "UNION ALL SELECT" ascii nocase
        $e = "SLEEP(" ascii nocase
        $f = "BENCHMARK(" ascii nocase
        $g = "WAITFOR DELAY" ascii nocase
        $h = "../*" ascii nocase
        $i = "0x" ascii
        $j = "-1' OR" ascii nocase
        $k = "admin'--" ascii nocase
    condition:
        any of ($a, $b, $c, $d, $e, $f, $g, $i, $j, $k) and
        filesize < 10MB
}

Suricata IDS Rule

alert http any any -> any any (msg:"ET EXPLOIT Tecnick SQL Injection Attempt (CVE-2025-23176)"; flow:to_server,established; content:"POST"; http_method; nocase; content:"="; http_client_body; pcre:"/(?:%27|')(?:%4F|o)(?:%52|r)\s*(?:%31|1)\s*=\s*(?:%31|1)/i"; classtype:web-application-attack; sid:202523176001; rev:1; metadata:created_at 2025_01_01, updated_at 2025_01_01;)

alert http any any -> any any (msg:"ET EXPLOIT Tecnick SQLi UNION SELECT Probe (CVE-2025-23176)"; flow:to_server,established; content:"UNION"; http_uri; nocase; content:"SELECT"; http_uri; nocase; distance:1; content:"FROM"; http_uri; nocase; distance:1; classtype:web-application-attack; sid:202523176002; rev:1;)

alert http any any -> any any (msg:"ET EXPLOIT Tecnick SQLi Time-Based Payload (CVE-2025-23176)"; flow:to_server,established; content:"SLEEP("; http_uri; nocase; content:"pg_sleep"; http_uri; nocase; content:"WAITFOR"; http_uri; nocase; classtype:web-application-attack; sid:202523176003; rev:1;)

Elastic Detection

sequence by source.ip
  with maxspan=15s
  [network where event.type == "connection" and destination.port == 80 or destination.port == 443]
  [http where event.type == "traffic" and 
      (http.request.body.content contains "' OR '" or
       http.request.body.content contains "UNION SELECT" or
       http.request.body.content contains "SLEEP(" or
       http.request.body.content contains "WAITFOR" or
       http.request.body.content contains "pg_sleep" or
       url.path contains "'" and
       http.response.status_code != 200)]

Splunk SPL Query

index=web* sourcetype=access_* 
| where match(_raw, "(?i)(%27\\s*OR|'\\s*OR\\s*['\"]?\\d|UNION\\s+SELECT|SLEEP\\s*\\(|WAITFOR\\s+DELAY|pg_sleep\\s*\\()")
| eval attack_type="SQL Injection (CVE-2025-23176)"
| eval cve_id="CVE-2025-23176"
| eval severity=8.8
| table _time, src_ip, dest_ip, uri_path, http_method, attack_type, cve_id, severity
| sort - _time

Wazuh OSSEC Rule

<group name="web, sql_injection, tecnik,">
  <rule id="100231" level="15">
    <if_sid>31100</if_sid>
    <match>UNION SELECT\|' OR '1'='1\|' OR 1=1--\|SLEEP(\|WAITFOR DELAY\|pg_sleep(</match>
    <description>CVE-2025-23176: Possible Tecnick SQL injection attempt detected in HTTP request</description>
    <group>attack.sql_injection</group>
    <mitre>
      <id>T1190</id>
    </mitre>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence is 2/4 (CLAIMED) — a single source (the CNA) claims the patch exists, but it has not been independently confirmed. The vendor recommends upgrading to version 16.3.5 or later. Given the unconfirmed nature of the patch, defense-in-depth is strongly advised.

1) Immediate Mitigations (Before Patching):

• Place affected Tecnick applications behind a Web Application Firewall (WAF) with strict SQL injection rule sets.
• Restrict network access to the application interface — enforce IP allow-listing or VPN-only access wherever feasible.
• Disable any unauthenticated functionality if the application architecture permits it; many SQLi flaws are reachable via these paths.
• If the application exposes administrative or database-facing endpoints, disable them temporarily.
• Since no affected version range is disclosed, inventory all Tecnick deployments and treat versions below 16.3.5 as potentially vulnerable.

2) Patch/Upgrade Steps:

• Upgrade to Tecnick version 16.3.5 or later as recommended by the vendor.
• Validate the vendor's patch claim independently — download the upgrade, test it in a staging environment, and verify that the vulnerable SQL paths no longer accept injection payloads.
• If the vendor provides advisory documentation, review it for specific guidance regarding API changes or configuration updates required post-upgrade.

3) Long-Term Hardening:

• Adopt a secure software development lifecycle for any in-house modifications to Tecnick code — enforce parameterized queries or prepared statements exclusively.
• Implement database-level least privilege: the application's DB credentials should have minimal read/write permissions, never DDL or administrative privileges.
• Deploy a runtime application self-protection (RASP) solution to detect and block injection at the application layer.
• Monitor CISA KEV and vendor notifications for updates on this vulnerability — the current KEV status is NO, but exploitation may escalate.
• For all SQL-backed applications, institute continuous black-box scanning (DAST) and white-box source review (SAST) to identify similar injection patterns before they ship.

References

1. NVD Entry — CVE-2025-23176: https://nvd.nist.gov/vuln/detail/CVE-2025-23176 (Primary source; contains CWE-89 classification, CVSS vector, and vendor patch reference)
2. CWE-89 — Improper Neutralization of Special Elements used in an SQL Command: https://cwe.mitre.org/data/definitions/89.html (Vulnerability class deep-dive)
3. FIRST EPSS — CVE-2025-23176: https://www.first.org/epss/ (EPSS score 0.00451; probability of exploitation)
4. Vendor Advisory — Tecnick upgrade notice for version 16.3.5 (patch reference; not independently confirmed — confidence 2/4)
5. CISA Known Exploited Vulnerabilities Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog (CVE-2025-23176 — currently NOT listed; verified retrieval date)

Threat Actor Campaigns: No active threat actor campaigns or exploit-in-the-wild evidence exist at the time of writing. The EPSS score of 0.00451 (37th percentile) indicates low current exploitation probability relative to the broader CVE landscape, but this may change as PoC material circulates. Organizations should monitor Mitre ATT&CK techniques T1190 (Exploit Public-Facing Application) and T1213 (Data from Information Repositories) for correlation.