Xen 3.4, 4.0, and 4.1, when the guest OS has not registered a handler for a syscall or sysenter instruction, does not properly clear a flag for exception injection when injecting a General Protection Fault, which allows local PV guest OS users to cause a denial of service (guest crash) by later triggering an exception that would normally be handled within Xen.
Conclusion & alert: CVE-2012-0218 is rated Low Risk (18.9/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.40%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
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 | 0.06% | 0.40% | +0.34% |
| 2 | 2023-03-07 | 0.95% | 0.06% | -0.89% |
| 3 | 2022-02-04 | — | 0.95% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 1.9 | 2.0 | LOW |
|
3.4 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2012-0218 not yet assigned priority: Debian including 1 source packages (xen), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2012-0218 |
gentoo
|
high | CVE-2012-0218: 1 GLSA(s) (201309-24), 3 atom(s) (app-emulation/xen, app-emulation/xen-pvgrub, app-emulation/xen-tools); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-0218 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2012-0218 |
ubuntu
|
low | CVE-2012-0218 low priority: Ubuntu including 4 source packages (xen, xen-3.1, xen-3.2, xen-3.3), 36 status rows across 9 suites (hardy, lucid, natty, oneiric, precise, quantal, raring, saucy, upstream): DNE 23, released 4, ignored 3, needs-triage 3, not-affected 3. | https://ubuntu.com/security/CVE-2012-0218 |