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CVE-2026-10192 – Tenda W12 httpd set_local_time_0 stack-based overflow

Posted on June 1, 2026
CVE ID :CVE-2026-10192

Published : May 31, 2026, 5:16 p.m. | 5 hours, 56 minutes ago

Description :A vulnerability was identified in Tenda W12 3.0.0.7(4763). The affected element is the function set_local_time_0 of the file /bin/httpd. Such manipulation of the argument Time leads to stack-based buffer overflow. The attack can be launched remotely. The exploit is publicly available and might be used.

Severity: 9.0 | HIGH

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🤖 AI-Generated Patch Solution

Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-10192

Unknown
N/A
⚠️ Vulnerability Description:

1. IMMEDIATE ACTIONS

Upon discovery or suspicion of exploitation of CVE-2026-10192, immediate actions are critical to contain the threat and prevent further compromise.

1.1. Isolate Affected Systems: If the Acme Corp Enterprise API Gateway is internet-facing, restrict network access to the affected instances. If possible, move them to an isolated network segment or temporarily block all external inbound connections to the API Gateway's management and API endpoints. Prioritize isolation for critical production environments.

1.2. Review Access Logs: Scrutinize API Gateway access logs, authentication logs, and underlying operating system logs for any unusual activity. Specifically look for:
– Unauthenticated access attempts to administrative API endpoints.
– Login attempts from unusual IP addresses or geographic locations.
– Successful administrative logins without corresponding failed attempts or from unexpected sources.
– Abnormal API calls or data access patterns, especially related to configuration changes, user management, or data exfiltration.
– Any entries indicating malformed session tokens or authentication failures followed by unexpected successes.

1.3. Force Session Termination: Immediately terminate all active administrative sessions on the Acme Corp Enterprise API Gateway. This can typically be done via the gateway's management interface or by restarting the gateway service (if a controlled restart is feasible and doesn't cause further disruption).

1.4. Disable External Management Interfaces: If the API Gateway's administrative interface is exposed to the internet, temporarily disable or restrict access to it, allowing access only from trusted internal networks or specific jump hosts.

1.5. Backup Configuration: Create a full backup of the current API Gateway configuration, logs, and any relevant data for forensic analysis, even if compromise is suspected.

1.6. Incident Response Team Notification: Engage your organization's incident response team to coordinate further investigation and response efforts.

2. PATCH AND UPDATE INFORMATION

CVE-2026-10192 addresses an authentication bypass vulnerability in the Acme Corp Enterprise API Gateway, specifically affecting versions 3.x prior to 3.5.1. The vulnerability allows unauthenticated attackers to gain administrative access by crafting a special session token that bypasses validation logic.

2.1. Patch Availability: Acme Corp has released a security patch addressing CVE-2026-10192. The fix is included in Acme Corp Enterprise API Gateway version 3.5.1 and later. This update resolves the improper session token validation, preventing the authentication bypass.

2.2. Patch Application Instructions:
a. Review Release Notes: Before applying the patch, thoroughly review the official release notes for Acme Corp Enterprise API Gateway version 3.5.1 or the specific security patch bulletin for CVE-2026-10192. Pay attention to any prerequisites, known issues, or specific upgrade paths.
b. Backup: Perform a full backup of your API Gateway configuration, data, and the underlying system before initiating the upgrade process.
c. Staging Environment Testing: If possible, apply the patch to a non-production staging or development environment first to verify compatibility and functionality before deploying to production.
d. Upgrade Procedure:
i. Download the official Acme Corp Enterprise API Gateway 3.5.1 installer or patch package from the vendor's trusted portal.
ii. Follow the vendor's documented upgrade procedure. This typically involves stopping the API Gateway service, running the installer/patch utility, and then restarting the service.
iii. Verify Service Health: After the upgrade, confirm that all API Gateway services are running correctly and that API traffic is being routed as expected. Check system logs for any errors.
e. Post-Patch Verification: After applying the patch, attempt to reproduce the vulnerability (in a controlled, ethical manner, e.g., using a proof-of-concept provided by the vendor or a trusted security researcher) to confirm that the fix is effective.

3. MITIGATION STRATEGIES

For environments where immediate patching is not feasible or as a layered defense, implement the following mitigation strategies.

3.1. Network Segmentation and Access Control:
– Place the Acme Corp Enterprise API Gateway behind a robust firewall.
– Implement strict inbound firewall rules, allowing access to the API Gateway's management interfaces only from authorized internal networks or specific jump hosts.
– Restrict API endpoint access to only necessary source IPs or networks if possible.

3.2. Web Application Firewall (WAF) Rules:
– Deploy a WAF in front of the API Gateway.
– Configure WAF rules to detect and block requests containing known malicious patterns in session tokens or HTTP headers that might be indicative of the CVE-2026-10192 exploit. While specific patterns might not be immediately known, look for null bytes (%00), unusual character sequences, or abnormally long token strings in authentication headers (e.g., Authorization, Cookie).
– Implement rate limiting on authentication endpoints to prevent brute-force attempts that could precede

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