CVE-2013-7441

The modern style negotiation in Network Block Device (nbd-server) 2.9.22 through 3.3 allows remote attackers to cause a denial of service (root process termination) by (1) closing the connection during negotiation or (2) specifying a name for a non-existent export.

Published: 2015-05-29 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-7441 is rated Moderate Risk (62.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.64%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-7441

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-19 3.17% 3.64% +0.47%
2 2025-07-05 5.97% 3.17% -2.81%
3 2025-05-20 — 5.97% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-7441

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2013-7441

OS Trackers for CVE-2013-7441

vendor priority summary link
debian not yet assigned CVE-2013-7441 not yet assigned priority: Debian including 1 source packages (nbd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-7441
ubuntu medium CVE-2013-7441 medium priority: Ubuntu including 1 source packages (nbd), 5 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): not-affected 3, released 2. https://ubuntu.com/security/CVE-2013-7441

Affected software / configurations for CVE-2013-7441

Vendor Product Version Raw CPE
wouter_verhelst nbd 2.9.3 cpe:2.3:a:wouter_verhelst:nbd:2.9.3:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.4 cpe:2.3:a:wouter_verhelst:nbd:2.9.4:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.5 cpe:2.3:a:wouter_verhelst:nbd:2.9.5:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.6 cpe:2.3:a:wouter_verhelst:nbd:2.9.6:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.7 cpe:2.3:a:wouter_verhelst:nbd:2.9.7:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.8 cpe:2.3:a:wouter_verhelst:nbd:2.9.8:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.9 cpe:2.3:a:wouter_verhelst:nbd:2.9.9:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.22 cpe:2.3:a:wouter_verhelst:nbd:2.9.22:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.23 cpe:2.3:a:wouter_verhelst:nbd:2.9.23:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.24 cpe:2.3:a:wouter_verhelst:nbd:2.9.24:*:*:*:*:*:*:*
wouter_verhelst nbd 2.9.25 cpe:2.3:a:wouter_verhelst:nbd:2.9.25:*:*:*:*:*:*:*
wouter_verhelst nbd 3.0 cpe:2.3:a:wouter_verhelst:nbd:3.0:*:*:*:*:*:*:*
wouter_verhelst nbd 3.1 cpe:2.3:a:wouter_verhelst:nbd:3.1:*:*:*:*:*:*:*
wouter_verhelst nbd 3.1.1 cpe:2.3:a:wouter_verhelst:nbd:3.1.1:*:*:*:*:*:*:*
wouter_verhelst nbd 3.2 cpe:2.3:a:wouter_verhelst:nbd:3.2:*:*:*:*:*:*:*
wouter_verhelst nbd 3.3 cpe:2.3:a:wouter_verhelst:nbd:3.3:*:*:*:*:*:*:*

References for CVE-2013-7441

cvelogic Threat Intelligence