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CVE-2011-2527

13
FAUCET Score

CVE-2011-2527 describes a privilege escalation vulnerability in Qemu versions 0.14.0 and earlier, specifically within the change_process_uid function in os-posix.c. This flaw allows local guest users to access restricted host files due to improper dropping of group privileges when the -runas option is employed. With a low CVSS score of 2.1 (AV:L/AC:L/Au:N/C:P/I:N/A:N), it indicates a low attack complexity and local access requirement, primarily impacting confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.14.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
0.1.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:0.1.0:*:*:*:*:*:*:*
0.1.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:0.1.1:*:*:*:*:*:*:*
0.1.2CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:0.1.2:*:*:*:*:*:*:*
0.1.3CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:0.1.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

AV:L/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 65th percentile among its peer group of 2,096 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm-2:0.12.1.2-2.209.el6
View patch

Vendor Advisories (1)

redhatCVE-2011-2527Moderate

qemu: when started as root, extra groups are not dropped correctly

Jul 9, 2011

References

lists.fedoraproject.org / pipermail/package-announce/2012-June/081972.html
lists.opensuse.org / opensuse-updates/2012-02/msg00009.html
rhn.redhat.com / errata/RHSA-2011-1531.html
bugs.launchpad.net / qemu/+bug/807893
secunia.com / advisories/45187
Vendor Advisory
secunia.com / advisories/45188
Vendor Advisory
secunia.com / advisories/45419
Vendor Advisory
secunia.com / advisories/47157
Vendor Advisory
secunia.com / advisories/47992
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/68539
debian.org / security/2011/dsa-2282
ubuntu.com / usn/usn-1177-1
openwall.com / lists/oss-security/2011/07/12/15
openwall.com / lists/oss-security/2011/07/12/5
osvdb.org / 74752
securityfocus.com / bid/48659