// For flags

CVE-2003-0740

Stunnel 3.24/4.00 - Daemon Hijacking

Severity Score

5.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Stunnel 4.00, and 3.24 and earlier, leaks a privileged file descriptor returned by listen(), which allows local users to hijack the Stunnel server.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Local
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
  • 2003-09-03 CVE Reserved
  • 2003-09-04 CVE Published
  • 2003-09-05 First Exploit
  • 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
Stunnel
Search vendor "Stunnel"
Stunnel
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3.3
Search vendor "Stunnel" for product "Stunnel" and version "3.3"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
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3.4a
Search vendor "Stunnel" for product "Stunnel" and version "3.4a"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
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3.7
Search vendor "Stunnel" for product "Stunnel" and version "3.7"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
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3.8
Search vendor "Stunnel" for product "Stunnel" and version "3.8"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.9
Search vendor "Stunnel" for product "Stunnel" and version "3.9"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.10
Search vendor "Stunnel" for product "Stunnel" and version "3.10"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.11
Search vendor "Stunnel" for product "Stunnel" and version "3.11"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.12
Search vendor "Stunnel" for product "Stunnel" and version "3.12"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.13
Search vendor "Stunnel" for product "Stunnel" and version "3.13"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.14
Search vendor "Stunnel" for product "Stunnel" and version "3.14"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.15
Search vendor "Stunnel" for product "Stunnel" and version "3.15"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.16
Search vendor "Stunnel" for product "Stunnel" and version "3.16"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.17
Search vendor "Stunnel" for product "Stunnel" and version "3.17"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.18
Search vendor "Stunnel" for product "Stunnel" and version "3.18"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.19
Search vendor "Stunnel" for product "Stunnel" and version "3.19"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.20
Search vendor "Stunnel" for product "Stunnel" and version "3.20"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.21
Search vendor "Stunnel" for product "Stunnel" and version "3.21"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.21a
Search vendor "Stunnel" for product "Stunnel" and version "3.21a"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.21b
Search vendor "Stunnel" for product "Stunnel" and version "3.21b"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.21c
Search vendor "Stunnel" for product "Stunnel" and version "3.21c"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.22
Search vendor "Stunnel" for product "Stunnel" and version "3.22"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
3.24
Search vendor "Stunnel" for product "Stunnel" and version "3.24"
-
Affected
Stunnel
Search vendor "Stunnel"
Stunnel
Search vendor "Stunnel" for product "Stunnel"
4.0
Search vendor "Stunnel" for product "Stunnel" and version "4.0"
-
Affected