Memory leak in the worker MPM (worker.c) for Apache 2, in certain circumstances, allows remote attackers to cause a denial of service (memory consumption) via aborted connections, which prevents the memory for the transaction pool from being reused for other connections.
Conclusion & alert: CVE-2005-2970 is rated Moderate Risk (48.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 14.19%, 96th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. 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 | 20.80% | 14.19% | -6.61% |
| 2 | 2025-12-28 | 16.30% | 20.80% | +4.50% |
| 3 | 2025-12-27 | — | 16.30% | — |
Full EPSS history (16 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-2005-2970 low priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2005-2970 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2005-2970 |
ubuntu
|
medium | CVE-2005-2970 medium priority: Ubuntu including 1 source packages (apache2), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): not-affected 3, needs-triage 1. | https://ubuntu.com/security/CVE-2005-2970 |
Fixed in Apache HTTP Server 2.0.55: http://httpd.apache.org/security/vulnerabilities_20.html
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apache | http_server | >= 2.0.36, < 2.0.55 | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 4.10 | cpe:2.3:o:canonical:ubuntu_linux:4.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 5.04 | cpe:2.3:o:canonical:ubuntu_linux:5.04:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 5.10 | cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 3.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 4.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 3.0 | cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 4.0 | cpe:2.3:o:redhat:enterprise_linux_server:4.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 3.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 4.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:4.0:*:*:*:*:*:*:* |
| fedoraproject | fedora_core | 4 | cpe:2.3:o:fedoraproject:fedora_core:4:*:*:*:*:*:*:* |