CVE-2012-2625

The PyGrub boot loader in Xen unstable before changeset 25589:60f09d1ab1fe, 4.2.x, and 4.1.x allows local para-virtualized guest users to cause a denial of service (memory consumption) via a large (1) bzip2 or (2) lzma compressed kernel image.

Published: 2012-10-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-2625 is rated Low Risk (30.8/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.92%). 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-2012-2625

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 0.32% 0.92% +0.61%
2 2025-03-19 0.35% 0.32% -0.03%
3 2025-03-17 — 0.35% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-2625

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.7 2.0 LOW
AV:A/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 5.1 2.9 [email protected]

Weakness enumeration for CVE-2012-2625

OS Trackers for CVE-2012-2625

vendor priority summary link
debian low CVE-2012-2625 low 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-2012-2625
redhat medium — https://access.redhat.com/security/cve/CVE-2012-2625
ubuntu medium CVE-2012-2625 medium 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, not-affected 5, ignored 4, needs-triage 4. https://ubuntu.com/security/CVE-2012-2625

Affected software / configurations for CVE-2012-2625

Vendor Product Version Raw CPE
xen xen 4.1.0 cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*
xen xen 4.1.1 cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*
xen xen 4.1.2 cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*
xen xen 4.1.3 cpe:2.3:o:xen:xen:4.1.3:*:*:*:*:*:*:*
xen xen 4.2.0 cpe:2.3:o:xen:xen:4.2.0:*:*:*:*:*:*:*
xen xen-unstable < 25589\:60f09d1ab1fe cpe:2.3:o:xen:xen-unstable:*:*:*:*:*:*:*:*

References for CVE-2012-2625

URL Tags
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1817 Broken Link
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-1130.html Third Party Advisory
http://secunia.com/advisories/49184 Third Party Advisory
http://secunia.com/advisories/51413 Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/10/26/3 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/53650 Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1027090 Third Party Advisory VDB Entry
http://xenbits.xensource.com/hg/xen-unstable.hg/rev/60f09d1ab1fe Vendor Advisory
cvelogic Threat Intelligence