// For flags

CVE-2001-1086

XFree86 X11R6 3.3 XDM - Session Cookie Guessing

Severity Score

9.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

XDM in XFree86 3.3 and 3.3.3 generates easily guessable cookies using gettimeofday() when compiled with the HasXdmXauth option, which allows remote attackers to gain unauthorized access to the X display via a brute force attack.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2001-06-24 First Exploit
  • 2001-07-04 CVE Published
  • 2002-03-15 CVE Reserved
  • 2024-08-08 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Xfree86 Project
Search vendor "Xfree86 Project"
 X11r6
Search vendor "Xfree86 Project" for product "X11r6"
 3.3
Search vendor "Xfree86 Project" for product "X11r6" and version "3.3"
-
Affected
Xfree86 Project
Search vendor "Xfree86 Project"
 X11r6
Search vendor "Xfree86 Project" for product "X11r6"
 3.3.3
Search vendor "Xfree86 Project" for product "X11r6" and version "3.3.3"
-
Affected