Critical (9.8). EPSS 8.5% chance of exploitation in the next 30 days.
The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application crash) or possibly have unspecified other impact via vectors involving long user and password fields.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
8.5% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-31)