CVE-2011-4578

event.c in acpid (aka acpid2) before 2.0.11 does not have an appropriate umask setting during execution of event-handler scripts, which might allow local users to (1) perform write operations within directories created by a script, or (2) read files created by a script, via standard filesystem system calls.

Published: 2012-08-29 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4578 is rated Low Risk (25.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-4578

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 2025-03-17 0.04% 0.08% +0.03%
2 2023-03-07 1.59% 0.04% -1.55%
3 2022-02-04 — 1.59% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4578

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2011-4578

OS Trackers for CVE-2011-4578

vendor priority summary link
debian not yet assigned CVE-2011-4578 not yet assigned 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-2011-4578
redhat low — https://access.redhat.com/security/cve/CVE-2011-4578
ubuntu medium CVE-2011-4578 medium priority: Ubuntu including 1 source packages (acpid), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 4, ignored 1, not-affected 1. https://ubuntu.com/security/CVE-2011-4578

Affected software / configurations for CVE-2011-4578

Vendor Product Version Raw CPE
tedfelix acpid2 <= 2.0.10 cpe:2.3:a:tedfelix:acpid2:*:*:*:*:*:*:*:*
tedfelix acpid2 2.0.0 cpe:2.3:a:tedfelix:acpid2:2.0.0:*:*:*:*:*:*:*
tedfelix acpid2 2.0.1 cpe:2.3:a:tedfelix:acpid2:2.0.1:*:*:*:*:*:*:*
tedfelix acpid2 2.0.2 cpe:2.3:a:tedfelix:acpid2:2.0.2:*:*:*:*:*:*:*
tedfelix acpid2 2.0.3 cpe:2.3:a:tedfelix:acpid2:2.0.3:*:*:*:*:*:*:*
tedfelix acpid2 2.0.4 cpe:2.3:a:tedfelix:acpid2:2.0.4:*:*:*:*:*:*:*
tedfelix acpid2 2.0.5 cpe:2.3:a:tedfelix:acpid2:2.0.5:*:*:*:*:*:*:*
tedfelix acpid2 2.0.6 cpe:2.3:a:tedfelix:acpid2:2.0.6:*:*:*:*:*:*:*
tedfelix acpid2 2.0.7 cpe:2.3:a:tedfelix:acpid2:2.0.7:*:*:*:*:*:*:*
tedfelix acpid2 2.0.8 cpe:2.3:a:tedfelix:acpid2:2.0.8:*:*:*:*:*:*:*
tedfelix acpid2 2.0.9 cpe:2.3:a:tedfelix:acpid2:2.0.9:*:*:*:*:*:*:*

References for CVE-2011-4578

cvelogic Threat Intelligence