The pidfile_write function in core/pidfile.c in keepalived 1.2.2 and earlier uses 0666 permissions for the (1) keepalived.pid, (2) checkers.pid, and (3) vrrp.pid files in /var/run/, which allows local users to kill arbitrary processes by writing a PID to one of these files.
Conclusion & alert: CVE-2011-1784 is rated Low Risk (24.6/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.37%). Mandatory action: 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.
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 | 0.04% | 0.37% | +0.33% |
| 2 | 2023-03-07 | 1.28% | 0.04% | -1.24% |
| 3 | 2022-02-04 | — | 1.28% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 3.6 | 2.0 | LOW |
|
3.9 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2011-1784 low priority: Debian including 1 source packages (keepalived), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-1784 |
gentoo
|
normal | CVE-2011-1784: 1 GLSA(s) (201207-07), 1 atom(s) (sys-cluster/keepalived); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-1784 |
ubuntu
|
low | CVE-2011-1784 low priority: Ubuntu including 1 source packages (keepalived), 21 status rows across 21 suites (artful, bionic, cosmic, dapper, hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 16, not-affected 4, released 1. | https://ubuntu.com/security/CVE-2011-1784 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| keepalived | keepalived | <= 1.2.2 | cpe:2.3:a:keepalived:keepalived:*:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.2.1 | cpe:2.3:a:keepalived:keepalived:0.2.1:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.2.3 | cpe:2.3:a:keepalived:keepalived:0.2.3:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.2.6 | cpe:2.3:a:keepalived:keepalived:0.2.6:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.2.7 | cpe:2.3:a:keepalived:keepalived:0.2.7:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.3.5 | cpe:2.3:a:keepalived:keepalived:0.3.5:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.3.6 | cpe:2.3:a:keepalived:keepalived:0.3.6:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.3.7 | cpe:2.3:a:keepalived:keepalived:0.3.7:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.3.8 | cpe:2.3:a:keepalived:keepalived:0.3.8:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.4.8 | cpe:2.3:a:keepalived:keepalived:0.4.8:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.4.9 | cpe:2.3:a:keepalived:keepalived:0.4.9:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.4.9a | cpe:2.3:a:keepalived:keepalived:0.4.9a:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.5.3 | cpe:2.3:a:keepalived:keepalived:0.5.3:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.5.5 | cpe:2.3:a:keepalived:keepalived:0.5.5:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.5.6 | cpe:2.3:a:keepalived:keepalived:0.5.6:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.5.7 | cpe:2.3:a:keepalived:keepalived:0.5.7:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.5.8 | cpe:2.3:a:keepalived:keepalived:0.5.8:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.5.9 | cpe:2.3:a:keepalived:keepalived:0.5.9:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.1 | cpe:2.3:a:keepalived:keepalived:0.6.1:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.2 | cpe:2.3:a:keepalived:keepalived:0.6.2:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.3 | cpe:2.3:a:keepalived:keepalived:0.6.3:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.4 | cpe:2.3:a:keepalived:keepalived:0.6.4:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.5 | cpe:2.3:a:keepalived:keepalived:0.6.5:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.6 | cpe:2.3:a:keepalived:keepalived:0.6.6:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.7 | cpe:2.3:a:keepalived:keepalived:0.6.7:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.8 | cpe:2.3:a:keepalived:keepalived:0.6.8:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.9 | cpe:2.3:a:keepalived:keepalived:0.6.9:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.6.10 | cpe:2.3:a:keepalived:keepalived:0.6.10:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.7.1 | cpe:2.3:a:keepalived:keepalived:0.7.1:*:*:*:*:*:*:* |
| keepalived | keepalived | 0.7.6 | cpe:2.3:a:keepalived:keepalived:0.7.6:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.0.0 | cpe:2.3:a:keepalived:keepalived:1.0.0:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.0.1 | cpe:2.3:a:keepalived:keepalived:1.0.1:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.0.2 | cpe:2.3:a:keepalived:keepalived:1.0.2:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.0.3 | cpe:2.3:a:keepalived:keepalived:1.0.3:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.0 | cpe:2.3:a:keepalived:keepalived:1.1.0:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.1 | cpe:2.3:a:keepalived:keepalived:1.1.1:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.2 | cpe:2.3:a:keepalived:keepalived:1.1.2:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.3 | cpe:2.3:a:keepalived:keepalived:1.1.3:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.4 | cpe:2.3:a:keepalived:keepalived:1.1.4:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.5 | cpe:2.3:a:keepalived:keepalived:1.1.5:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.6 | cpe:2.3:a:keepalived:keepalived:1.1.6:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.7 | cpe:2.3:a:keepalived:keepalived:1.1.7:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.8 | cpe:2.3:a:keepalived:keepalived:1.1.8:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.9 | cpe:2.3:a:keepalived:keepalived:1.1.9:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.10 | cpe:2.3:a:keepalived:keepalived:1.1.10:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.11 | cpe:2.3:a:keepalived:keepalived:1.1.11:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.12 | cpe:2.3:a:keepalived:keepalived:1.1.12:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.13 | cpe:2.3:a:keepalived:keepalived:1.1.13:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.14 | cpe:2.3:a:keepalived:keepalived:1.1.14:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.15 | cpe:2.3:a:keepalived:keepalived:1.1.15:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.16 | cpe:2.3:a:keepalived:keepalived:1.1.16:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.17 | cpe:2.3:a:keepalived:keepalived:1.1.17:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.18 | cpe:2.3:a:keepalived:keepalived:1.1.18:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.19 | cpe:2.3:a:keepalived:keepalived:1.1.19:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.1.20 | cpe:2.3:a:keepalived:keepalived:1.1.20:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.2.0 | cpe:2.3:a:keepalived:keepalived:1.2.0:*:*:*:*:*:*:* |
| keepalived | keepalived | 1.2.1 | cpe:2.3:a:keepalived:keepalived:1.2.1:*:*:*:*:*:*:* |