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CVE-2013-4256

14
FAUCET Score

CVE-2013-4256 describes multiple stack-based and heap-based buffer overflows in Network Audio System (NAS) 1.9.3, affecting Canonical Ubuntu Linux and Radscan Network Audio System. A local attacker can exploit these vulnerabilities through various command arguments, environment variables, or logging functions. With a CVSS score of 4.6, this vulnerability has a low attack complexity and requires local access, potentially leading to a denial of service or arbitrary code execution. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

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:*:*:*:*:*:*:*
1.9.3CPE matchmatch criteria
cpe:2.3:a:radscan:network_audio_system:1.9.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 84th percentile among its peer group of 3,049 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, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

References

radscan.com / pipermail/nas/2013-August/001270.html
Exploit
sourceforge.net / p/nas/code/288
ExploitPatch
debian.org / security/2013/dsa-2771
openwall.com / lists/oss-security/2013/08/16/2
Patch
openwall.com / lists/oss-security/2013/08/19/3
Patch
securityfocus.com / bid/61848
ubuntu.com / usn/USN-1986-1
Vendor Advisory