Listen to this Post
How CVE-2026-60192 Works
CVE-2026-60192 is a critical vulnerability residing in the Connector/Net component of Oracle MySQL Connectors, affecting versions 9.7.0 through 9.7.1. The flaw stems from insufficient input validation and weak authentication mechanisms within the Connector/Net library, which handles .NET application connectivity to MySQL databases.
An unauthenticated attacker with network access can exploit this vulnerability via multiple protocols (e.g., TCP, HTTP, or custom binary protocols) without requiring any user interaction. The attack complexity is rated high (AC:H), meaning specific conditions—such as precise memory layout knowledge or timing windows—must be met for successful exploitation. Despite this difficulty, a successful exploit grants the attacker full takeover of the MySQL Connector service, effectively compromising the entire database connectivity layer.
The technical root cause is a memory corruption flaw triggered by malformed packets or crafted authentication handshakes. By sending specially crafted network payloads, an attacker can:
– Bypass authentication checks
– Overflow buffers or corrupt heap metadata
– Achieve remote code execution (RCE) with the privileges of the connector process
Once exploited, the attacker can:
- Exfiltrate sensitive database credentials and data (Confidentiality impact: High)
- Modify or delete database records (Integrity impact: High)
- Crash the connector or cause denial-of-service (Availability impact: High)
The CVSS 3.1 Base Score of 8.1 reflects the severe impact across all three security pillars. The vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H confirms the vulnerability is network-exploitable, requires high attack complexity, needs no privileges or user interaction, and has a completely compromised scope.
Given the widespread use of MySQL Connector/Net in enterprise .NET applications, this vulnerability poses a significant supply-chain risk. Attackers can pivot from the connector to backend databases, potentially compromising entire application stacks.
DailyCVE Form:
Platform: MySQL Connectors
Version: 9.7.0-9.7.1
Vulnerability: Remote Code Execution
Severity: Critical (8.1)
Date: 2026-07-21
Prediction: 2026-08-15
What Undercode Say: Analytics
Attack Surface Analysis:
- Affected Component: Connector/Net (MySql.Data.dll)
- Protocols Exploitable: TCP (port 3306), HTTP (XProtocol), custom binary
- Pre-Auth Required: Yes – attacker needs no credentials
- User Interaction: None – fully remote unauthenticated
- Exploit Prerequisites: Network reachability to connector service; ability to send malformed packets
Detection Indicators:
- Abnormal connection attempts from untrusted IPs to MySQL ports
- Unexpected crashes or restarts of .NET applications using Connector/Net
- Memory spikes or heap corruption logs in application event viewer
- Unusual authentication failure patterns (大量 of AUTH packet errors)
Bash Commands for Detection & Monitoring:
Check for installed MySQL Connector/Net versions
find / -name "MySql.Data.dll" -exec strings {} \; | grep -E "Version|9.7.[bash]"
Monitor for unusual MySQL connections on port 3306
sudo tcpdump -i any -n "port 3306" -c 100
Check Windows Event Log for .NET runtime crashes (Windows)
Get-WinEvent -LogName Application | Where-Object { $_.Message -match "MySql.Data|Connector/Net" }
Search for known vulnerable DLLs in GAC
gacutil -l | grep -i "mysql.data"
Monitor for abnormal process memory usage (Linux)
ps aux | grep -i mysql | awk '{print $2,$4,$6,$11}' | sort -k3 -n
Code Snippet – Vulnerable Pattern (Conceptual):
// Connector/Net internal packet parsing (simplified vulnerable logic)
public void ReadPacket(byte[] rawData) {
int length = BitConverter.ToInt32(rawData, 0); // Attacker-controlled
byte[] payload = new byte[bash]; // Heap allocation
Array.Copy(rawData, 4, payload, 0, length); // No bounds check -> overflow
ProcessPayload(payload);
}
Exploit
Exploit Vector:
Remote unauthenticated attacker sends a crafted initial handshake packet or malformed COM_QUERY payload to the MySQL Connector/Net listener. The payload triggers a heap-based buffer overflow in the packet deserialization routine.
Proof-of-Concept Approach (Conceptual):
- Establish TCP connection to the target MySQL port (default 3306).
- Send a greeting packet with an oversized length field (e.g.,
0xFFFFFFFF). - Follow with a payload that overwrites adjacent heap metadata.
- Use ROP (Return-Oriented Programming) techniques to redirect execution flow.
- Execute shellcode to spawn a reverse shell or extract credentials.
Exploit Complexity: High – requires precise heap grooming and knowledge of target architecture (x86/x64) and .NET runtime version.
Real-World Risk: While difficult, successful exploitation leads to full system compromise within the database tier, enabling lateral movement to other enterprise systems.
Protection
Immediate Mitigations:
- Upgrade to a patched version of MySQL Connector/Net (check Oracle’s Critical Patch Update for versions > 9.7.1).
- Restrict network access to MySQL ports (3306, 33060) using firewall rules – allow only trusted application servers.
- Enable SSL/TLS for all MySQL connections to add an encryption layer (though this does not directly prevent the exploit, it complicates MITM attacks).
- Deploy WAF/IDS rules to detect anomalous packet sizes or malformed MySQL protocol sequences.
- Disable unused protocols (e.g., XProtocol) if not required by your application.
Long-Term Hardening:
- Implement application-level input validation for all database queries.
- Use least-privilege service accounts for connector processes.
- Regularly audit `.NET` assemblies for known vulnerable dependencies using tools like
dotnet list package --vulnerable. - Monitor Oracle’s security advisories for future patches.
Impact
| Dimension | Impact |
|||
| Confidentiality | High – Attacker can read all database contents, including credentials, PII, and business-critical data. |
| Integrity | High – Attacker can modify, insert, or delete records, potentially corrupting entire databases. |
| Availability | High – Attacker can crash the connector service, causing application downtime and denial of service. |
| Business | Critical – Breach of database layer can expose trade secrets, customer data, and lead to regulatory fines (GDPR, HIPAA). |
| Scope | Unchanged – The vulnerability affects the connector itself, but the database backend remains the ultimate target. |
| Attack Surface | Network – Exploitable over multiple protocols, making network segmentation insufficient. |
Cascading Effects:
Compromise of the connector service often leads to full database takeover, enabling attackers to pivot to other systems using stolen credentials or exploit trust relationships between databases and applications.
🎯Let’s Practice Exploiting & Learn Patching For Free:
🎓 Live Courses & Certifications:
Join Undercode Academy for Verified Certifications
🚀 Request a Custom Project:
Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
