The netfilter/iptables module in Linux before 2.6.8.1 allows remote attackers to cause a denial of service (kernel crash) or bypass firewall rules via crafted packets, which are not properly handled by the skb_checksum_help function.
Conclusion & alert: CVE-2005-0449 is rated Moderate Risk (62.4/100): CVSS High severity, with high exploitation likelihood (EPSS 4.64%, 91th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.37% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 2.27% | 4.64% | +2.37% |
| 2 | 2025-03-30 | 3.84% | 2.27% | -1.57% |
| 3 | 2025-03-29 | — | 3.84% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.1 | 2.0 | HIGH |
|
8.6 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2005-0449 |
ubuntu
|
medium | CVE-2005-0449 medium priority: Ubuntu including 3 source packages (kernel-source-2.4.27, linux-source-2.6.15, linux-source-2.6.17), 12 status rows across 4 suites (dapper, edgy, feisty, upstream): DNE 5, released 4, needs-triage 3. | https://ubuntu.com/security/CVE-2005-0449 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| linux | linux_kernel | 2.6.0 | cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.1 | cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.2 | cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.3 | cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.4 | cpe:2.3:o:linux:linux_kernel:2.6.4:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.5 | cpe:2.3:o:linux:linux_kernel:2.6.5:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.6 | cpe:2.3:o:linux:linux_kernel:2.6.6:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.7 | cpe:2.3:o:linux:linux_kernel:2.6.7:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.8 | cpe:2.3:o:linux:linux_kernel:2.6.8:*:*:*:*:*:*:* |