# CVE-2026-91926

## Summary

- **CVE ID:** CVE-2026-91926
- **Severity:** LOW
- **CVSS Score:** 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
- **CWE:** CWE-401
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 17, 2026

## Description

A flaw was found in gss-ntlmssp. A memory leak occurs in the NTLM target-info parser when a crafted NTLM CHALLENGE message contains duplicated string-valued AV_PAIR entries. The parser allocates memory for each string value but does not free the previous allocation when the same AV_PAIR type appears more than once, leaking the earlier allocation. A malicious or man-in-the-middle server can exploit this to cause gradual memory exhaustion on the client during NTLM authentication, leading to a denial of service.

## Affected Products

No affected products listed.

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-91926)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2533698)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.23%
- **EPSS Percentile:** 14.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._