CVE-2026-95386Hinoki check available

Analysis hang via undersized TTL block size

Published Sep 29, 2026 · Updated Sep 29, 2026

Denial of service in Wireshark 4.6.0 through 4.6.8 allows attackers to hang packet-trace analysis with a malformed TTL file. The TTL reader accepts a file-controlled two-byte block size, then repeatedly seeks beyond end-of-file after classifying an entry as corrupt instead of stopping. A user must open the crafted trace; the resulting retry loop consumes a CPU core and floods warnings, without reported data disclosure or code execution.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in Wireshark 4.6.0 through 4.6.8 allows attackers to hang packet-trace analysis with a malformed TTL file. The TTL reader accepts a file-controlled two-byte block size, then repeatedly seeks beyond end-of-file after classifying an entry as corrupt instead of stopping. A user must open the crafted trace; the resulting retry loop consumes a CPU core and floods warnings, without reported data disclosure or code execution.

The record

CVE
CVE-2026-95386
Published
Sep 29, 2026
Updated
Sep 29, 2026
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-835, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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=4.6.0 <4.6.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=4.6.0 <4.6.9

Published CVSS scores

5.5GitLab CNACVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

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