Stunnel
Stunnel: vulnerabilidades y CVE
Stunnel tiene 15 vulnerabilidades publicadas, 3 de ellas en los últimos 12 meses. 0 son críticas y 0 figuran en el catálogo de explotación activa de CISA.
CVE15
Últimos 12 meses3
Críticas0
Explotadas activamente0
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Últimas vulnerabilidades
| CVE | Severidad | EPSS | Explotación activa | Publicada | Descripción |
|---|---|---|---|---|---|
| CVE-2026-70454 | Alta (7.6) | 0.19% | — | 13 ago 2026 | rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting… |
| CVE-2026-70368 | Media (6.5) | 0.44% | — | 4 ago 2026 | A stack-based out-of-bounds read vulnerability exists in the "s_vlog" function of stunnel, when handling oversized log messages via "vsnprintf". A remote attacker with network access to a stunnel service can send… |
| CVE-2026-70367 | Media (5.4) | 0.26% | — | 4 ago 2026 | A Server-Side Request Forgery (SSRF) bypass vulnerability exists in “stunnel” 5.79 and lower when configured in SOCKS proxy mode. This flaw allows a client to bypass intended localhost restrictions by using IPv4-mapped… |
| CVE-2021-20230 | Alta (7.5) | 1.2% | — | 23 feb 2021 | A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use both redirect and verifyChain options. This flaw allows an attacker with a certificate signed by a… |
| CVE-2015-3644 | Media (5.8) | 2.1% | — | 14 may 2015 | Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expected server after the initial connection, which allows remote attackers to bypass authentication. |
| CVE-2014-0016 | Media (4.3) | 2.2% | — | 24 mar 2014 | stunnel before 5.00, when using fork threading, does not properly update the state of the OpenSSL pseudo-random number generator (PRNG), which causes subsequent children with the same process ID to use the same entropy… |
| CVE-2013-1762 | Media (6.6) | 2.9% | — | 8 mar 2013 | stunnel 4.21 through 4.54, when CONNECT protocol negotiation and NTLM authentication are enabled, does not correctly perform integer conversion, which allows remote proxy servers to execute arbitrary code via a crafted… |
| CVE-2011-2940 | Alta (9.3) | 5.7% | — | 25 ago 2011 | 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. |
| CVE-2008-2420 | Media (6.8) | 1.4% | — | 23 may 2008 | The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote attackers to bypass intended access restrictions by using revoked certificates. |
| CVE-2008-2400 | Alta (7.2) | 0.35% | — | 22 may 2008 | Unspecified vulnerability in stunnel before 4.23, when running as a service on Windows, allows local users to gain privileges via unknown attack vectors. |
| CVE-2003-0740 | Media (4.6) | 0.70% | — | 20 oct 2003 | 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. |
| CVE-2002-1563 | Baja (1.2) | 0.34% | — | 12 may 2003 | stunnel 4.0.3 and earlier allows attackers to cause a denial of service (crash) via SIGCHLD signal handler race conditions that cause an inconsistency in the child counter. |
| CVE-2003-0147 | Media (5) | 6.4% | — | 31 mar 2003 | OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during… |
| CVE-2002-0002 | Alta (7.5) | 5.3% | — | 31 ene 2002 | Format string vulnerability in stunnel before 3.22 when used in client mode for (1) smtp, (2) pop, or (3) nntp allows remote malicious servers to execute arbitrary code. |
| CVE-2001-0060 | Alta (10) | 2.8% | — | 12 feb 2001 | Format string vulnerability in stunnel 3.8 and earlier allows attackers to execute arbitrary commands via a malformed ident username. |
🎯 Cómo se explota (técnicas ATT&CK)
Número de CVE de esta tecnología asignadas a cada técnica de explotación o de impacto principal.