Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth…
Priority MEDIUM 40CWE-406Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth amplification) because the DNSBomb manipulation causes accumulation of low-rate DNS queries such that there is a large-sized response in a burst of traffic.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00648 51st 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:dnsserver:11.5.3:*:*:*:*:*:*:* | 11.5.3 | Vulnerable | Technitium |
- cpe:2.3:a:technitium:dnsserver:11.5.3:*:*:*:*:*:*:* Versions 11.5.3 Vulnerable ·Technitium
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-49203
- 2026-10-03 Alias added: GHSA-qc32-xfvc-33fg
- 2026-10-18 EPSS moved to the 50th–90th percentile
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-2023-12997 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
- TI-2023-12998 An issue was discovered in Technitium through 11.0.3. CVSS 3.1HIGH 7.5
Sources
- CVE-2023-49203 · CVE Program
- CVE-2023-49203 · NVD
- FIRST EPSS
- GHSA-qc32-xfvc-33fg · 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