CVE-2011-2940: stunnel
Vulnerability summary
CVE-2011-2940 is a high (CVSS 9.3) vulnerability in stunnel. EPSS estimates a 5.71% chance of exploitation in the next 30 days, higher than 93% of scored vulnerabilities.
Not severe (CVSS 9.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 25-08-2011PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
stunnel 4.40 and 4.41 might allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
5.71%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
No change 0.00 pp
From 5.71% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- stunnel4< 3:4.42-1
Stunnel1 product
- stunnel4.40 | 4.41
2 vendors · 2 products
References
11 links- bugzilla.redhat.com/show_bug.cgi?id=732068X Refsource CONFIRM
- stunnel.org?page=sdf_ChangeLogX Refsource CONFIRM
