CVE-2026-51785: n/a
An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request
AI Analysis
Technical Summary
This vulnerability affects Hiawatha web server versions up to and including 12.1. It enables remote attackers to execute arbitrary code without authentication by exploiting improper input validation or code injection flaws. The CVSS v3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges or user interaction required, and full confidentiality, integrity, and availability impact. No vendor advisory or patch information is currently provided.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code remotely on the affected server, potentially leading to full system compromise, data theft, or service disruption. The vulnerability has a critical CVSS score of 9.8, reflecting high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider applying temporary mitigations such as restricting access to the affected service or deploying network-level protections to limit exposure.
CVE-2026-51785: n/a
Description
An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Hiawatha web server versions up to and including 12.1. It enables remote attackers to execute arbitrary code without authentication by exploiting improper input validation or code injection flaws. The CVSS v3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges or user interaction required, and full confidentiality, integrity, and availability impact. No vendor advisory or patch information is currently provided.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code remotely on the affected server, potentially leading to full system compromise, data theft, or service disruption. The vulnerability has a critical CVSS score of 9.8, reflecting high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider applying temporary mitigations such as restricting access to the affected service or deploying network-level protections to limit exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-08T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a6d0a20bf32cb7a34488569
Added to database: 07/31/2026, 20:48:32 UTC
Last enriched: 08/08/2026, 14:28:15 UTC
Last updated: 09/14/2026, 10:01:31 UTC
Views: 67
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.