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CVE-2010-3699

14
FAUCET Score

CVE-2010-3699 describes a denial-of-service vulnerability in Xen 3.x, specifically affecting Citrix Xen, where guest OS users can trigger a kernel thread leak in the backend driver (netback, blkback, or blktap). This flaw can lead to system instability, preventing proper shutdown of devices or guest OSes, causing hangs in zenwatch, or disrupting xm commands. With a low CVSS score of 2.7, the attack requires authenticated access and local network proximity (AV:A/AC:L/Au:S), resulting in partial availability impact (A:P). There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.2CPE matchmatch criteria
cpe:2.3:a:citrix:xen:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:citrix:xen:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:a:citrix:xen:3.0.4:*:*:*:*:*:*:*
3.1.3CPE matchmatch criteria
cpe:2.3:a:citrix:xen:3.1.3:*:*:*:*:*:*:*
3.1.4CPE matchmatch criteria
cpe:2.3:a:citrix:xen:3.1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.7LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
5.1
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 88th percentile among its peer group of 85 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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 5Fixed in: kernel-0:2.6.18-194.32.1.el5
View patch

Vendor Advisories (1)

redhatCVE-2010-3699Moderate

kernel: guest->host denial of service from invalid xenbus transitions

Nov 24, 2010

References

lists.opensuse.org / opensuse-security-announce/2011-01/msg00007.html
secunia.com / advisories/42372
Vendor Advisory
secunia.com / advisories/42789
secunia.com / advisories/43056
secunia.com / advisories/46397
redhat.com / support/errata/RHSA-2011-0004.html
securityfocus.com / archive/1/520102/100/0/threaded
securityfocus.com / bid/45039
securitytracker.com / id
vmware.com / security/advisories/VMSA-2011-0012.html
vupen.com / english/advisories/2011/0024
vupen.com / english/advisories/2011/0213
xenbits.xensource.com / linux-2.6.18-xen.hg
Patch