CVE-2026-91926
LOW
INFO
Priority: 0.01
BB Relevance:
57/100
Published: 2026-09-15
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Network
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
Low
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.
Weakness Classification (1)
References & Advisories (2)
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT