CVE-2003-0740
Stunnel 4.00, and 3.24 and earlier, leaks a privileged file descriptor returned by listen(),...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2003-0740- CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2003-0740- Updated
- 2026-11-02
EUVDEUVD-2003-0731 No score
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.
- Record
EUVD-2003-0731- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-94h5-4g3p-4v6g No score
Stunnel 4.00, and 3.24 and earlier, leaks a privileged file descriptor returned by listen(),...
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.
- Record
GHSA-94h5-4g3p-4v6g- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2003-0740- Updated
- 2026-11-02
OSVDEBIAN-CVE-2003-0740 No score
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.
- Record
DEBIAN-CVE-2003-0740- Updated
- 2026-11-02
Affected products
Affected packages
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Stunnel 3.24/4.00 - Daemon Hijacking | 2003-09-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2003-0740 is a medium vulnerability (CVSS 4.6) in Stunnel, published September 4, 2003. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. Fixed in stunnel 2:3.26.
References
marc.info?l=bugtraq&m=106260760211958&w=2
distro.conectiva.com.br/atualizacoes?id=a&anuncio=000736
mandriva.com/security/advisories?name=MDKSA-2003:108
redhat.com/support/errata/RHSA-2003-297.html
nvd.nist.gov/vuln/detail/CVE-2003-0740
github.com/advisories/GHSA-94h5-4g3p-4v6g
security-tracker.debian.org/tracker/CVE-2003-0740