The Session Initiation Protocol (SIP) implementation in IPTel SIP Express Router 0.8.9 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted INVITE messages, as demonstrated by the OUSPG PROTOS c07-sip test suite.
Conclusion & alert: CVE-2003-1113 is rated High Exploit Risk (72/100): CVSS High severity, with high exploitation likelihood (EPSS 5.14%, 91th 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 | 2026-06-15 | 19.78% | 5.14% | -14.64% |
| 2 | 2025-12-28 | 15.73% | 19.78% | +4.05% |
| 3 | 2025-03-30 | — | 15.73% | — |
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 | Product | Version | Raw CPE |
|---|---|---|---|
| iptel | sip_express_router | 0.8.8 | cpe:2.3:h:iptel:sip_express_router:0.8.8:*:*:*:*:*:*:* |
| iptel | sip_express_router | 0.8.9 | cpe:2.3:h:iptel:sip_express_router:0.8.9:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.cert.org/advisories/CA-2003-06.html | Third Party Advisory US Government Resource |
| http://www.ee.oulu.fi/research/ouspg/protos/testing/c07/sip/ | Exploit |
| http://www.iptel.org/ser/security/ | |
| http://www.kb.cert.org/vuls/id/528719 | Third Party Advisory US Government Resource |
| http://www.securityfocus.com/bid/6904 | Patch |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/11379 |