VulnSocial

CVE-2026-40012Disclosure

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 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

ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-524

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

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

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-26: 1Technical Details · 2026-06-26: 106-26
Signal classification1 categories
Disclosure
1100.0%
Full discourse1 post
  • Yasuhiro Morishita@OrangeMorishita
    Disclosure

    CVE-2026-40012：EDNS Client Subnetが有効になっている場合（デフォルト無効）、意図しないサブネット情報が漏えいする可能性がある。EDNS Client Subnetを有効にしている場合のみ。深刻度Medium。

    Post summary

    This CVE highlights a Medium‑severity vulnerability where enabling EDNS Client Subnet can cause unintended subnet information leakage.

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    4.5K followersView on X

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