Stack-based buffer overflow in the IMAP service in Mercur Messaging 5.0 SP3 and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long string to the (1) LOGIN or (2) SELECT command, a different set of attack vectors and possibly a different vulnerability than CVE-2003-1177.
Conclusion & alert: CVE-2006-1255 is rated High Exploit Risk (89.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 86.52%, 99th percentile). Core evidence: 7 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 |
|---|---|---|---|---|
| 16476 | exploit_db | edb | 2010-09-20 | Exploit-DB ↗ |
| 16481 | exploit_db | edb | 2010-08-25 | Exploit-DB ↗ |
| 3540 | exploit_db | edb | 2007-03-21 | Exploit-DB ↗ |
| 3133 | exploit_db | edb | 2007-01-15 | Exploit-DB ↗ |
| 2345 | exploit_db | edb | 2006-09-11 | Exploit-DB ↗ |
| 1592 | exploit_db | edb | 2006-03-19 | Exploit-DB ↗ |
| — | 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 | 2025-12-15 | 86.93% | 86.52% | -0.41% |
| 2 | 2025-06-02 | 86.56% | 86.93% | +0.37% |
| 3 | 2025-03-30 | — | 86.56% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mercur | mercur_messaging | <= 2005_5.0_sp3 | cpe:2.3:a:mercur:mercur_messaging:*:*:*:*:*:*:*:* |