How severe is CVE-2011-1925?

CVE-2011-1925 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-1925 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1925?

CVE-2011-1925 affects Wouter Verhelst Nbd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-1925?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1925 published?

CVE-2011-1925 was published on 2011-05-31 and last updated on 2026-06-16.

CVE-2011-1925

CVE-2011-1925 is a medium-severity vulnerability in Wouter Verhelst Nbd with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Wouter Verhelst Nbd
Published: 2011-05-31
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2011-1925?: 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.
How severe is CVE-2011-1925?: CVE-2011-1925 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-1925 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1925?: CVE-2011-1925 affects Wouter Verhelst Nbd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-1925?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1925 published?: CVE-2011-1925 was published on 2011-05-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:wouter_verhelst:nbd:*:*:*:*:*:*:*:*

More vulnerabilities in Wouter Verhelst Nbd

CVE-2015-0847 — High (CVSS 7.8): nbd-server.c in Network Block Device (nbd-server) before 3.11 does not properly handle signals, which allows remote…
CVE-2013-7441 — High (CVSS 7.8): The modern style negotiation in Network Block Device (nbd-server) 2.9.22 through 3.3 allows remote attackers to cause a…
CVE-2013-6410 — High (CVSS 7.5): nbd-server in Network Block Device (nbd) before 3.5 does not properly check IP addresses, which might allow remote…
CVE-2011-0530 — High (CVSS 7.5): Buffer overflow in the mainloop function in nbd-server.c in the server in Network Block Device (nbd) before 2.9.20…
CVE-2005-3534 — High (CVSS 7.5): Buffer overflow in the Network Block Device (nbd) server 2.7.5 and earlier, and 2.8.0 through 2.8.2, allows remote…

All CVEs affecting Wouter Verhelst Nbd →