Nsd
Vendor:
First CVE: May 22, 2009 · Active for 17 years
8
Total CVEs
More Total CVEs than 87% of tracked products
1.6
Avg CVEs / Year
Higher CVE frequency than 62% of tracked products
6.9
Avg CVSS
Higher Avg CVSS than 43% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Nsd over time
Volume of CVEsAvg CVSS Base Score
First CVE
May 22, 2009
17 years ago
Most Recent CVE
Jun 25, 2026
33 days ago
CVE Severity & Scoring
Nsd8 CVEs
38%
63%
All CVEs353,240 CVEs
45%
40%
11%
MediumHigh
Attack Vector
Local0 (0.0%)
Network6 (75.0%)
Unknown2 (25.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low5 (62.5%)
High1 (12.5%)
Unknown2 (25.0%)
User Interaction
None6 (75.0%)
Unknown2 (25.0%)
Required0 (0.0%)
Privileges Required
Low2 (25.0%)
High0 (0.0%)
None4 (50.0%)
Unknown2 (25.0%)
Top CVEs
Signals from CVEs in this product scope (8 CVEs).
8 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-12244HIGH If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 6551 | Jun 25, 2026 | 8.8 | 36 | NO | NO |
CVE-2026-12246HIGH NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is writt | Jun 25, 2026 | 8.1 | 32 | NO | NO |
CVE-2026-12490HIGH When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed whe | Jun 25, 2026 | 7.5 | 31 | NO | NO |
CVE-2026-12245HIGH NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS | Jun 25, 2026 | 7.5 | 31 | NO | NO |
CVE-2012-2978MEDIUM query.c in NSD 3.0.x through 3.0.8, 3.1.x through 3.1.1, and 3.2.x before 3.2.12 allows remote attackers to cause a denial of service (NULL pointer dereference and child process cr | Jul 27, 2012 | 5.0 | 23 | NO | NO |
CVE-2016-6173HIGH NSD before 4.1.11 allows remote DNS master servers to cause a denial of service (/tmp disk consumption and slave server crash) via a zone transfer with unlimited data. | Feb 9, 2017 | 7.5 | 20 | NO | NO |
CVE-2013-5661MEDIUM Cache Poisoning issue exists in DNS Response Rate Limiting. | Nov 5, 2019 | 5.9 | 17 | NO | NO |
CVE-2009-1755MEDIUM 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 | May 22, 2009 | 5.0 | 16 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (8 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (8 CVEs).
Media Mentions
Signals from CVEs in this product scope (8 CVEs).
Top CNAs Publishing CVEs For Nsd
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 3.2.9 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.8 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.7 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.6 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.5 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.4 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.3 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.15 | 1 | 5.9 | 3.5% | 0 | 0 |
| 3.2.10 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.2.1 | 2 | 5.0 | 6.2% | 0 | 0 |
| 3.2.0 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.1.1 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.1.0 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.0.8 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.0.7 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.0.6 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.0.5 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.0.4 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.0.3 | 1 | 5.0 | 9.2% | 0 | 0 |
| 3.0.2 | 1 | 5.0 | 9.2% | 0 | 0 |