CVE-2025-13826: CWE-20 Improper input validation in Zervit portable HTTP/Web server
Zervit's portable HTTP/Web server contains a vulnerability (CVE-2025-13826) due to improper input validation that allows remote attackers to cause a denial of service (DoS) by sending malicious configuration reset requests. Exploitation results in the application becoming unresponsive, requiring manual restart. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
CVE-2025-13826 is a high-severity vulnerability in Zervit's portable HTTP/Web server caused by CWE-20 (improper input validation). The flaw allows remote attackers to trigger a denial of service by sending specially crafted configuration reset requests. This input is not adequately validated, leading the server to stop responding. The vulnerability does not require authentication or user interaction but does require the attacker to send crafted network requests. There is no indication of an official fix or patch at this time.
Potential Impact
Successful exploitation causes the Zervit HTTP/Web server to become unresponsive, resulting in a denial of service condition. The service must be manually restarted to recover. No data confidentiality or integrity impacts are described. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, administrators should consider restricting access to the configuration reset functionality or monitor for suspicious requests targeting this feature. Manual restart is required after exploitation to restore service.
CVE-2025-13826: CWE-20 Improper input validation in Zervit portable HTTP/Web server
Description
Zervit's portable HTTP/Web server contains a vulnerability (CVE-2025-13826) due to improper input validation that allows remote attackers to cause a denial of service (DoS) by sending malicious configuration reset requests. Exploitation results in the application becoming unresponsive, requiring manual restart. No official patch or remediation guidance is currently available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-13826 is a high-severity vulnerability in Zervit's portable HTTP/Web server caused by CWE-20 (improper input validation). The flaw allows remote attackers to trigger a denial of service by sending specially crafted configuration reset requests. This input is not adequately validated, leading the server to stop responding. The vulnerability does not require authentication or user interaction but does require the attacker to send crafted network requests. There is no indication of an official fix or patch at this time.
Potential Impact
Successful exploitation causes the Zervit HTTP/Web server to become unresponsive, resulting in a denial of service condition. The service must be manually restarted to recover. No data confidentiality or integrity impacts are described. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, administrators should consider restricting access to the configuration reset functionality or monitor for suspicious requests targeting this feature. Manual restart is required after exploitation to restore service.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- INCIBE
- Date Reserved
- 2025-12-01T14:33:41.665Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e7405619fe3cd2cdbc7e33
Added to database: 4/21/2026, 9:16:06 AM
Last enriched: 4/21/2026, 9:31:04 AM
Last updated: 4/21/2026, 10:55:04 AM
Views: 6
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