Multiple integer overflows in Dibbler 0.6.0 allow remote attackers to cause a denial of service (daemon crash) via packets containing options with large lengths, which trigger attempts at excessive memory allocation, as demonstrated by (1) the TSrvMsg constructor in SrvMessages/SrvMsg.cpp; the (2) TClntMsg, (3) TClntOptIAAddress, (4) TClntOptIAPrefix, (5) TOptVendorSpecInfo, and (6) TOptOptionRequest constructors; and the (7) TRelIfaceMgr::decodeRelayRepl, (8) TRelMsg::decodeOpts, and (9) TSrvIfaceMgr::decodeRelayForw methods.
Conclusion & alert: CVE-2007-5030 is rated Moderate Risk (46.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.75%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 1.19% | 1.75% | +0.55% |
| 2 | 2025-03-30 | 1.55% | 1.19% | -0.36% |
| 3 | 2025-03-29 | — | 1.55% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2007-5030 low priority: Debian including 1 source packages (dibbler), 3 status rows across 3 suites (bookworm, bullseye, trixie): resolved 3. | https://security-tracker.debian.org/tracker/CVE-2007-5030 |
ubuntu
|
medium | CVE-2007-5030 medium priority: Ubuntu including 1 source packages (dibbler), 6 status rows across 6 suites (dapper, edgy, feisty, gutsy, hardy, upstream): released 3, ignored 2, DNE 1. | https://ubuntu.com/security/CVE-2007-5030 |