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CVE-2013-6410

20
FAUCET Score

CVE-2013-6410 describes a vulnerability in nbd-server versions prior to 3.5, affecting Network Block Device (nbd) implementations across various Linux distributions including Debian and Ubuntu. This flaw allows remote attackers to bypass access restrictions by exploiting improper IP address checks, where a partial match in the authfile configuration can grant unauthorized access. With a CVSS score of 7.5, this high-severity vulnerability is easily exploitable over the network with low attack complexity, potentially leading to unauthorized disclosure, modification, and availability of data. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.4CPE matchmatch criteria
cpe:2.3:a:wouter_verhelst:nbd:*:*:*:*:*:*:*:*
2.7.5CPE matchmatch criteria
cpe:2.3:a:wouter_verhelst:nbd:2.7.5:*:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:wouter_verhelst:nbd:2.8.0:*:*:*:*:*:*:*
2.8.2CPE matchmatch criteria
cpe:2.3:a:wouter_verhelst:nbd:2.8.2:*:*:*:*:*:*:*
2.8.4CPE matchmatch criteria
cpe:2.3:a:wouter_verhelst:nbd:2.8.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.54%
Probability of exploitation in next 30 days
EPSS Percentile
83.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0254 is in the 70th percentile among its peer group of 51,485 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, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

sourceforge.net / mailarchive/forum.php
Patch
debian.org / security/2013/dsa-2806
Third Party Advisory
openwall.com / lists/oss-security/2013/11/29/4
Mailing ListThird Party Advisory
securityfocus.com / bid/64002
ubuntu.com / usn/USN-2676-1
Third Party Advisory