Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.
Priority LOW 37CWE-684Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00207 10th percentileScored 2026-11-07
Fix Fixed DnsServer (Technitium): 15.0.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Technitium | DnsServer | before 15.0.0 | 15.0.0 | Patch available | CNA |
- DnsServer VendorTechnitium Affected before 15.0.0 Fixed in 15.0.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:* | before 15.0 | Vulnerable | Technitium |
- cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:* Versions before 15.0 Vulnerable ·Technitium
Remediation
- Fix · CNA DnsServer (Technitium) Fixed in 15.0.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-42255
- 2026-10-03 Alias added: GHSA-v7f3-6mf2-m8hj
References
More Technitium Dnsserver vulnerabilities
- TI-2025-32106 An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a denial of… CVSS 3.1HIGH 7.5
- TI-2023-26858 Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth… CVSS 3.1HIGH 7.5
- TI-2023-12997 An issue was discovered in Technitium through 11.0.2. CVSS 3.1HIGH 7.5
- TI-2024-37117 An issue in Technitium through v13.2.2 enables attackers to conduct a DNS cache poisoning… CVSS 3.1HIGH 7.5
- TI-2023-12996 An issue was discovered in Technitium through 11.0.2. CVSS 3.1HIGH 7.5
- TI-2023-12994 An issue was discovered in Technitium 11.0.2. CVSS 3.1HIGH 7.5
Sources
- CVE-2026-42255 · CVE Program
- CVE-2026-42255 · NVD
- FIRST EPSS
- GHSA-v7f3-6mf2-m8hj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences