Stack-based Buffer Overflow Affecting vanhauser-thc/thc-hydra package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-VANHAUSERTHCTHCHYDRA-17661016
- published28 Jun 2026
- disclosed25 Jun 2026
- creditUnknown
Introduced: 25 Jun 2026
CVE-2026-56766 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow in the NTLM authentication handler across multiple modules when processing malicious NTLM Type-2 challenges. An attacker can achieve remote code execution by sending a crafted NTLM Type-2 challenge containing an excessively long domain string, which causes base64-encoded response data to overflow a stack buffer.