VulnSocial

CVE-2026-33254Disclosure(powerdns / dnsdist)

LOWCVSS 7.5 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default.

powerdns CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • dnsdist

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
powerdns
Products
dnsdist

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-22: 2Technical Details · 2026-04-22: 204-22
Signal classification1 categories
Disclosure
2100.0%
Referenced assets3 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-33254 Denial of Service via Unlimited Memory Allocation in DNSdist DoQ ... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-33254 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1

    Post summary

    The tweet announces CVE-2026-33254, a denial‑of‑service flaw in DNSdist DoQ caused by unlimited memory allocation, and links to a vulnerability details page but provides no exploit, PoC, or patch information.

    0000054
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-33254 An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ an… https://www.cve.org/CVERecord?id=CVE-2026-33254

    Post summary

    The statement discloses CVE‑2026‑33254, detailing that an attacker can trigger a denial‑of‑service in DNSdist by creating many concurrent DoQ or DoH3 connections, causing unlimited memory allocation.

    00000162
    57.2K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apppowerdnsdnsdist---

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