# NLnet Labs NSD vulnerabilities

Source: https://junglewise.ai/threats/technologies/nlnet-labs-nsd  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/nlnet-labs-nsd.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in NLnet Labs NSD: 0 in the last 7 days and 4 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-101341, was published on 14 October 2026. 4 vulnerabilities in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 4
- Last 90 days: 4
- All time: 4 (0 critical, 0 exploited in the wild)

## About NLnet Labs NSD

DNS server implementation maintained by NLnet Labs for domain name resolution.

## Latest NLnet Labs NSD vulnerabilities

- [CVE-2026-101341: NSD stack buffer overflow in RDATA parsing](https://junglewise.ai/threats/cve-2026-101341-tokens-of-text-in-rdata-of-for-example-txt-records-under-32) (info, published 14 Oct 2026)
- [CVE-2026-101339: NSD stack overflow in HIP resource record parsing](https://junglewise.ai/threats/cve-2026-101339-a-hip-resource-record-that-fills-the-rdata-near-or-at-is-limit) (info, published 14 Oct 2026)
- [CVE-2026-101338: NSD stack buffer overflow in SVCB/HTTPS record parsing](https://junglewise.ai/threats/cve-2026-101338-when-a-svcb-or-https-rr-has-filled-the-wire-format-rdata-up-to) (info, published 14 Oct 2026)
- [CVE-2026-101337: NSD stack buffer overflow in base64 RDATA parsing](https://junglewise.ai/threats/cve-2026-101337-when-base64-data-is-split-up-in-pieces-of-3-character-or-less) (info, published 14 Oct 2026)

## Most severe NLnet Labs NSD vulnerabilities

- [CVE-2026-101341: NSD stack buffer overflow in RDATA parsing](https://junglewise.ai/threats/cve-2026-101341-tokens-of-text-in-rdata-of-for-example-txt-records-under-32) (info, published 14 Oct 2026)
- [CVE-2026-101339: NSD stack overflow in HIP resource record parsing](https://junglewise.ai/threats/cve-2026-101339-a-hip-resource-record-that-fills-the-rdata-near-or-at-is-limit) (info, published 14 Oct 2026)
- [CVE-2026-101338: NSD stack buffer overflow in SVCB/HTTPS record parsing](https://junglewise.ai/threats/cve-2026-101338-when-a-svcb-or-https-rr-has-filled-the-wire-format-rdata-up-to) (info, published 14 Oct 2026)
- [CVE-2026-101337: NSD stack buffer overflow in base64 RDATA parsing](https://junglewise.ai/threats/cve-2026-101337-when-base64-data-is-split-up-in-pieces-of-3-character-or-less) (info, published 14 Oct 2026)

## Vulnerabilities per week

4 vulnerabilities in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 4 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other NLnet Labs technologies

- [NLnet Labs Unbound](https://junglewise.ai/threats/technologies/unbound): 46 vulnerabilities
- [NLnet Labs Routinator](https://junglewise.ai/threats/technologies/routinator): 10 vulnerabilities
- [NLnet Labs Krill](https://junglewise.ai/threats/technologies/krill): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "NLnet Labs NSD vulnerabilities", https://junglewise.ai/threats/technologies/nlnet-labs-nsd, 9 November 2026.