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CVE Record

CVE-2025-50334: An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a denial of service via the rate...

An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a denial of service via the rate-limiting component

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2025-50334 is a high-severity denial-of-service issue in Technitium DNS Server v13.5. A remote unauthenticated attacker could disrupt DNS availability through the rate-limiting component. The supplied sources do not show data theft, integrity impact, or confirmed active exploitation.

Executive priority

Prioritize remediation for exposed DNS servers because DNS outages can disrupt authentication, email, web access, and customer-facing services. Urgency is high for internet-facing systems, but current sources do not prove active exploitation.

Technical view

The CVE maps to CWE-770 and CVSS 3.1 score 7.5: network attack vector, low complexity, no privileges, no user interaction, availability impact only. The affected metadata is incomplete, but the description identifies Technitium DNS Server v13.5 and the rate-limiting component.

Likely exposure

Likely exposure is organizations running Technitium DNS Server v13.5 on reachable DNS infrastructure. Internet-facing DNS services carry higher operational risk. The CVE record lacks CPEs and structured affected product data, so inventory validation is necessary.

Exploitation context

The source bundle lists a public advisory and vendor code references, but no KEV listing and no cited evidence of active exploitation. Treat this as remotely reachable denial-of-service risk, not as confirmed in-the-wild exploitation.

Researcher notes

Evidence is thin in structured CVE fields: affected vendor/product/CPE entries are n/a. Analysis should anchor on the description, CVSS vector, CWE-770, advisory, changelog, and commit reference without inferring additional affected versions or exploit mechanics.

Mitigation direction

  • Identify all Technitium DNS Server deployments and record exact versions.
  • Check Technitium changelog and vendor advisory for fixed versions or configuration guidance.
  • Prioritize upgrading or applying vendor-recommended remediation for v13.5 instances.
  • Restrict DNS service exposure where business requirements allow.
  • Monitor DNS service health, query rates, and rate-limiting failures.

Validation and detection

  • Confirm whether any asset runs Technitium DNS Server v13.5.
  • Review DNS availability monitoring for unexplained service interruptions.
  • Check vendor changelog and commit reference for remediation status.
  • Verify change control records show upgrade or mitigation completion.
  • Document any compensating network controls around exposed DNS services.
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-770: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2025-50334 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
8Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6CISA-ADP
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2025-50334Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
redhat-SADPtechnitium-dns-server: Technitium DNS Server: Denial of Service via rate-limiting component
other:Red Hat severity ratingcvssV3_1
  • 2026-01-08T17:02:09.149Z: Reported to Red Hat.
  • 2026-01-08T00:00:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-770

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-770 · source CWE mapping

Allocation of Resources Without Limits or Throttling

Allocation of Resources Without Limits or Throttling represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs