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, which triggers a buffer over-read in the HASHwithTransform::Update function in hash.cpp.
Conclusion & alert: CVE-2008-0227 is rated High Exploit Risk (75.4/100): CVSS High severity, with high exploitation likelihood (EPSS 5.49%, 90th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-18 | 6.59% | 5.49% | -1.10% |
| 2 | 2026-02-04 | 5.84% | 6.59% | +0.75% |
| 3 | 2025-03-30 | — | 5.84% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2008-0227 |
ubuntu
|
low | CVE-2008-0227 low priority: Ubuntu including 2 source packages (mysql-dfsg-4.1, mysql-dfsg-5.0), 18 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): DNE 6, not-affected 4, released 4, ignored 2, needed 1, needs-triage 1. | https://ubuntu.com/security/CVE-2008-0227 |
Not vulnerable. This issue did not affect versions of MySQL as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5, Red Hat Application Stack v1, and v2, as they are not built with yaSSL support.