CVE-2011-1925

nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a...

5.0 MediumFix available

nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by causing a negotiation failure, as demonstrated by specifying a name for a non-existent export.

Exploit likelihood

2.52%Up 1.2 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2011-1925
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-1925
Updated: 2026-11-02

EUVDEUVD-2011-1923 No score

Record: EUVD-2011-1923
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4c65-9qmh-v9h5 No score

nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a...

Record: GHSA-4c65-9qmh-v9h5
Updated: 2026-11-02

OSV No score

Record: CVE-2011-1925
Updated: 2026-11-02

OSVDEBIAN-CVE-2011-1925 No score

Record: DEBIAN-CVE-2011-1925
Updated: 2026-11-02

Affected products

wouter verhelst nbd

Affected packages

Affected packages
Package	Affected	Fixed
`nbd` Debian:12	before 1:2.9.22-1	1:2.9.22-1
`nbd` Debian:13	before 1:2.9.22-1	1:2.9.22-1
`nbd` Debian:14	before 1:2.9.22-1	1:2.9.22-1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-1925 is a medium vulnerability (CVSS 5.0) in Wouter Verhelst Nbd, published May 31, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.52%, the 84th percentile. Fixed in nbd 1:2.9.22-1.

References

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