Technitium DNS Server before 10.0 allows a self-CNAME denial-of-service attack in which a…
Priority MEDIUM 40CWE-835Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-835.
Summary
Technitium DNS Server before 10.0 allows a self-CNAME denial-of-service attack in which a CNAME loop causes an answer to contain hundreds of records.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00708 53rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:technitium:dns_server:*:*:*:*:*:*:*:* | before 10.0 | Vulnerable | Technitium |
- cpe:2.3:a:technitium:dns_server:*:*:*:*:*:*:*:* Versions before 10.0 Vulnerable ·Technitium
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48256
- 2026-10-03 Alias added: GHSA-67rx-hj63-9h2v
References
More Technitium Dns Server vulnerabilities
- TI-2022-12504 An issue was discovered in Technitium DNS Server through 8.0.2 that allows variant V2 of… CVSS 3.1CRITICAL 9.8
- TI-2022-12503 An issue was discovered in Technitium DNS Server through 8.0.2 that allows variant V1 of… CVSS 3.1CRITICAL 9.8
- TI-2021-19156 A vulnerability in the bailiwick checking function in Technitium DNS Server <= v7.0… CVSS 3.1MEDIUM 4.3
Sources
- CVE-2022-48256 · CVE Program
- CVE-2022-48256 · NVD
- FIRST EPSS
- GHSA-67rx-hj63-9h2v · 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