CVE-2026-93652Public exploitNetwork attack vector

Daemon crash via wrapped peer EID length

Published Sep 18, 2026 · Updated Sep 18, 2026

Integer overflow in the TCPCLv3 handshake in D3TN GmbH µD3TN before 0.15.1 allows remote attackers to crash the daemon. A UINT32_MAX peer EID length wraps to zero in malloc(peer_eid_len + 1), while recv still uses the original length and overwrites the heap. An unauthenticated TCPCLv3 client can trigger the flaw before bundle parsing on Linux, interrupting service for connected applications and peers.

CVSS severity7.5
High
EPSS probability0.55%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the TCPCLv3 handshake in D3TN GmbH µD3TN before 0.15.1 allows remote attackers to crash the daemon. A UINT32_MAX peer EID length wraps to zero in malloc(peer_eid_len + 1), while recv still uses the original length and overwrites the heap. An unauthenticated TCPCLv3 client can trigger the flaw before bundle parsing on Linux, interrupting service for connected applications and peers.

The record

CVE
CVE-2026-93652
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
D3TN GmbH
Product
µD3TN
Classifications
CWE-190, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.15.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D3TN GmbH · µD3TNversion=0 <0.15.1

Published CVSS scores

7.5GitLab CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

Public exploit references

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Technologies

Your stack

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