ACPI Event Daemon (acpid) before 1.0.10 allows remote attackers to cause a denial of service (CPU consumption and connectivity loss) by opening a large number of UNIX sockets without closing them, which triggers an infinite loop.
Conclusion & alert: CVE-2009-0798 is rated Moderate Risk (47.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 8.80%, 92th 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 | 2025-03-30 | 15.45% | 8.80% | -6.64% |
| 2 | 2025-03-29 | 8.80% | 15.45% | +6.64% |
| 3 | 2025-03-17 | — | 8.80% | — |
Full EPSS history (7 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
|
medium | CVE-2009-0798 medium priority: Debian including 1 source packages (acpid), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2009-0798 |
gentoo
|
normal | CVE-2009-0798: 1 GLSA(s) (200905-06), 1 atom(s) (sys-power/acpid); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-0798 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2009-0798 |
ubuntu
|
low | CVE-2009-0798 low priority: Ubuntu including 1 source packages (acpid), 6 status rows across 6 suites (dapper, gutsy, hardy, intrepid, jaunty, upstream): released 4, ignored 1, needs-triage 1. | https://ubuntu.com/security/CVE-2009-0798 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| tim_hockin | acpid | <= 1.0.8 | cpe:2.3:a:tim_hockin:acpid:*:*:*:*:*:*:*:* |
| tim_hockin | acpid | 0.99.0 | cpe:2.3:a:tim_hockin:acpid:0.99.0:*:*:*:*:*:*:* |
| tim_hockin | acpid | 0.99.1 | cpe:2.3:a:tim_hockin:acpid:0.99.1:*:*:*:*:*:*:* |
| tim_hockin | acpid | 0.99.4 | cpe:2.3:a:tim_hockin:acpid:0.99.4:*:*:*:*:*:*:* |
| tim_hockin | acpid | 1.0.0 | cpe:2.3:a:tim_hockin:acpid:1.0.0:*:*:*:*:*:*:* |
| tim_hockin | acpid | 1.0.1 | cpe:2.3:a:tim_hockin:acpid:1.0.1:*:*:*:*:*:*:* |
| tim_hockin | acpid | 1.0.2 | cpe:2.3:a:tim_hockin:acpid:1.0.2:*:*:*:*:*:*:* |
| tim_hockin | acpid | 1.0.3 | cpe:2.3:a:tim_hockin:acpid:1.0.3:*:*:*:*:*:*:* |
| tim_hockin | acpid | 1.0.4 | cpe:2.3:a:tim_hockin:acpid:1.0.4:*:*:*:*:*:*:* |
| tim_hockin | acpid | 1.0.6 | cpe:2.3:a:tim_hockin:acpid:1.0.6:*:*:*:*:*:*:* |
| tim_hockin | acpid | 20010510 | cpe:2.3:a:tim_hockin:acpid:20010510:*:*:*:*:*:*:* |