CVE-2025-0693CWE-204CWE-208

Issue with AWS Sign-in IAM User Login Flow - Possible Username Enumeration

Medium · published January 23, 2025

CVSS v4.0
6.9
EPSS
0%
Percentile
29.5
In the wild
Unconfirmed
What it is

Variable response times in the AWS Sign-in IAM user login flow allowed for the use of brute force enumeration techniques to identify valid IAM usernames in an arbitrary AWS account.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00368 · 29.5th percentile
Weaknesses
CWE-204 · Observable Response Discrepancy; CWE-208 · Observable Timing Discrepancy
Published
2025-01-23T21:22Z
EPSS history
Timeline
  • 23 JAN 21:22Z
    Issue with AWS Sign-in IAM User Login Flow - Possible Username Enumeration
    cvelistv5