CVE-2009-1755

Name: CVE-2009-1755
Creator: NVD / NIST
Published: 2009-05-22T11:52:40.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.16%

Last modified Jun 16, 2026

CVE-2009-1755 is a vulnerability of currently unknown severity. Off-by-one error in the packet_read_query_section function in packet.c in nsd 3.2.1, and process_query_section in query.c in nsd 2.3.7, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors that trigger a buffer overflow.. EPSS estimates a 3.16% chance of exploitation in the next 30 days.

Description

Off-by-one error in the packet_read_query_section function in packet.c in nsd 3.2.1, and process_query_section in query.c in nsd 2.3.7, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors that trigger a buffer overflow.

Metrics

EPSS Probability

3.16%

86.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-189

Affected Software

Vendor	Product	Versions
Nlnetlabs	Nsd	2.0.0
Nlnetlabs	Nsd	2.0.1
Nlnetlabs	Nsd	2.0.2
Nlnetlabs	Nsd	2.1.0
Nlnetlabs	Nsd	2.1.1
Nlnetlabs	Nsd	2.1.2
Nlnetlabs	Nsd	2.1.3
Nlnetlabs	Nsd	2.1.4
Nlnetlabs	Nsd	2.1.5
Nlnetlabs	Nsd	2.3.7
Nlnetlabs	Nsd	3.2.1

References

Timeline

Published: May 22, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-1755?

How severe is CVE-2009-1755?

Severity scoring for CVE-2009-1755 is pending analysis. The EPSS model estimates a 3.16% probability of exploitation in the next 30 days.

How do I fix CVE-2009-1755?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-1755?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST