IRC Xchat client versions 1.4.2 and earlier allows remote attackers to execute arbitrary commands by encoding shell metacharacters into a URL which XChat uses to launch a web browser.
Conclusion & alert: CVE-2000-0787 is rated High Exploit Risk (78.7/100): CVSS High severity, with high exploitation likelihood (EPSS 9.21%, 95th 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 |
|---|---|---|---|---|
| 20161 | exploit_db | edb | 2000-08-17 | 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 | 2026-06-15 | 8.60% | 9.21% | +0.61% |
| 2 | 2026-01-28 | 12.34% | 8.60% | -3.74% |
| 3 | 2025-03-30 | — | 12.34% | — |
Full EPSS history (8 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-2000-0787 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| xchat | xchat | 1.2.1 | cpe:2.3:a:xchat:xchat:1.2.1:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.9 | cpe:2.3:a:xchat:xchat:1.3.9:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.10 | cpe:2.3:a:xchat:xchat:1.3.10:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.11 | cpe:2.3:a:xchat:xchat:1.3.11:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.12 | cpe:2.3:a:xchat:xchat:1.3.12:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.13 | cpe:2.3:a:xchat:xchat:1.3.13:*:*:*:*:*:*:* |
| xchat | xchat | 1.4 | cpe:2.3:a:xchat:xchat:1.4:*:*:*:*:*:*:* |
| xchat | xchat | 1.4.1 | cpe:2.3:a:xchat:xchat:1.4.1:*:*:*:*:*:*:* |
| xchat | xchat | 1.4.2 | cpe:2.3:a:xchat:xchat:1.4.2:*:*:*:*:*:*:* |
| xchat | xchat | 1.5.6 | cpe:2.3:a:xchat:xchat:1.5.6:*:*:*:*:*:*:* |
| xchat | xchat | 1.5.xdev | cpe:2.3:a:xchat:xchat:1.5.xdev:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://archives.neohapsis.com/archives/bugtraq/2000-08/0215.html | Vendor Advisory |
| http://archives.neohapsis.com/archives/bugtraq/2000-08/0301.html | Vendor Advisory |
| http://archives.neohapsis.com/archives/bugtraq/2000-08/0305.html | Vendor Advisory |
| http://www.redhat.com/support/errata/RHSA-2000-055.html | |
| http://www.securityfocus.com/bid/1601 | Vendor Advisory |