CVE-2026-45557— Technitium DNS Server excessive DNSSEC requests
Affected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Technitium | DNS Server | < 15.0 | affected |
15.0 | unaffected |
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-45557
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Technitium DNS Server excessive DNSSEC requests
Source: NVD (National Vulnerability Database)
Vulnerability Description
Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records. An attacker in control of a domain can cause a vulnerable system to generate excessive network traffic. Fixed in 15.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不对称的资源消耗(放大攻击)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Technitium DNS Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Technitium DNS Server是Technitium团队的一个开源的权威和递归 DNS 服务器。可用于自托管 DNS 服务器以保护隐私和安全。 Technitium DNS Server 15.0之前版本存在安全漏洞，该漏洞源于主动尝试获取缺失的RRSIG记录或错配的DNSKEY记录，攻击者控制域可导致系统生成过多网络流量。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Technitium | DNS Server | 0 ~ 15.0 | - |
II. Public POCs for CVE-2026-45557
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-45557
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-45557 (2)
Vendor Pages for CVE-2026-45557 (1)
IV. Related Vulnerabilities
Same product: DNS Server
Same vendor: Technitium
Same weakness: CWE-405
- CVE-2026-35665
OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook - CVE-2026-35626
OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion v - CVE-2026-25611
Pre-Authentication Memory Exhaustion Denial of Service in Mo - CVE-2026-24324
Denial of service (DOS) vulnerability in SAP BusinessObjects - CVE-2026-0485
Denial of service (DOS) vulnerability in SAP BusinessObjects
V. Comments for CVE-2026-45557
No comments yet