CVE-2003-0740: stunnel
Vulnerability summary
CVE-2003-0740 is a medium (CVSS 4.6) vulnerability in stunnel. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 53.2% of scored vulnerabilities. 1 public exploit is recorded.
Weaponized exploit (exploit-database, 05-09-2003)
Source freshness unavailable
How is this decided?Timeline
- 04-09-2003PublishedVulnerability first disclosed.
- 08-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.70%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.70% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundStunnel 3.24/4.00 - Daemon Hijacking
Maturity: weaponized
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- stunnel< 2:3.26
- stunnel4< 2:4.04
Stunnel1 product
- stunnel3.3 | 3.4a | 3.7 | 3.8 | 3.9 | 3.10 | 3.11 | 3.12 | 3.13 | 3.14 | 3.15 | 3.16 | 3.17 | 3.18 | 3.19 | 3.20 | 3.21 | 3.21a | 3.21b | 3.21c | 3.22 | 3.24 | 4.0
2 vendors · 3 products
