Yassl is a lightweight cryptographic library embedded in MySQL and other server applications, where despite a narrow product footprint its role in the supply chain makes its vulnerabilities broadly consequential. The recurring weaknesses center on memory-safety boundaries and input-handling validation in a cryptographic context, and the vendor's disclosures frequently acquire public exploit tooling. Defenders should inventory downstream products that bundle Yassl rather than tracking the library in isolation, since remediation typically depends on rebuilds by vendors such as MySQL; live severity and exploitation figures are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Yassl over time
Signals from CVEs in this vendor scope (8 CVEs).
8 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2008-0226HIGH Multiple buffer overflows in yaSSL 1.7.5 and earlier, as used in MySQL and possibly other products, allow remote attackers to execute arbitrary code via (1) the ProcessOldClientHel | Jan 10, 2008 | 7.5 | 84 | NO | YES |
CVE-2011-2900HIGH Stack-based buffer overflow in the (1) put_dir function in mongoose.c in Mongoose 3.0, (2) put_dir function in yasslEWS.c in yaSSL Embedded Web Server (yasslEWS) 0.2, and (3) _shtt | Aug 5, 2011 | 7.5 | 42 | NO | YES |
CVE-2005-3731HIGH Unspecified vulnerability in yaSSL before 1.0.6 has unknown impact and attack vectors, related to "certificate chain processing." | Nov 21, 2005 | 10.0 | 24 | NO | NO |
CVE-2008-0227HIGH yaSSL 1.7.5 and earlier, as used in MySQL and possibly other products, allows remote attackers to cause a denial of service (crash) via a Hello packet containing a large size value | Jan 10, 2008 | 7.5 | 20 | NO | NO |
CVE-2012-1558MEDIUM yaSSL CyaSSL before 2.0.8 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted X.509 certificate. | Mar 12, 2012 | 5.0 | 18 | NO | NO |
CVE-2014-2900MEDIUM wolfSSL CyaSSL before 2.9.4 does not properly validate X.509 certificates with unknown critical extensions, which allows man-in-the-middle attackers to spoof servers via crafted X. | Apr 22, 2014 | 5.8 | 16 | NO | NO |
CVE-2013-1623MEDIUM The TLS and DTLS implementations in wolfSSL CyaSSL before 2.5.0 do not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of | Feb 8, 2013 | 4.3 | 16 | NO | NO |
CVE-2014-2899MEDIUM wolfSSL CyaSSL before 2.9.4 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a request for the peer certificate when a certificate parsing fa | Apr 22, 2014 | 5.0 | 15 | NO | NO |
Signals from CVEs in this vendor scope (8 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Yassl.
Media articles that mention a CVE ID that affects a product developed by Yassl — matched by CVE ID, not by vendor name.