Is CVE-2011-2519 being actively exploited?

CVE-2011-2519 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-2519?

CVE-2011-2519 has a CVSS 2.0 base score of 5.5 (MEDIUM).

CVE-2011-2519

MEDIUM · CVSS 5.5EPSS 0.7%EU EUVD

Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.

Key facts

CVSS score: 5.5 (v2.0)
Severity: MEDIUM
CVSS vector: AV:A/AC:L/Au:S/C:N/I:N/A:C
Weakness (CWE): CWE-476
EPSS score: 0.7% (52th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-2504)
Published: December 27, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-2504 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

redhat / enterprise linux desktop
redhat / enterprise linux server
redhat / enterprise linux workstation
xen / xen

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical

References

http://rhn.redhat.com/errata/RHSA-2011-1212.html(Third Party Advisory)
http://www.openwall.com/lists/oss-security/2011/08/30/1(Mailing List, Third Party Advisory)
http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644(Patch, Vendor Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=718882(Issue Tracking, Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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