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CVE-2013-1056

11
FAUCET Score

CVE-2013-1056 describes a denial-of-service vulnerability in X.org X server versions 1.13.3 and earlier, specifically impacting Canonical Ubuntu Linux when the server is not run as root. The vulnerability, stemming from issues with cached xkb files, could allow a local attacker to crash the system or potentially escalate privileges. With a CVSS score of 1.9, it is considered low severity, requiring local access and medium attack complexity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:*
12.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
13.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.9LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 42nd percentile among its peer group of 747 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Vendor Patches (1)

ubuntuvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-1056Low

xorg-x11-server: local DoS vulnerability

Oct 17, 2013

References

ubuntu.com / usn/USN-1990-1
Vendor Advisory