CVE-2026-95386
Received Received - Intake

TTL File Parser Infinite Loop Causes DoS

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: GitLab Inc.

Description
TTL file parser infinite loop in 4.6.0 to 4.6.8 allows denial of service

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-95386
EUVD
EUVD-2026-88683

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wireshark wireshark From 4.6.0 (inc) to 4.6.8 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-835 The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

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Executive Summary

CVE-2026-95386 is an infinite loop vulnerability in Wireshark's TTL file parser affecting versions 4.6.0 to 4.6.8. When processing a corrupted block size of 2, the reader advances indefinitely beyond the end of file, causing CPU exhaustion and flooding the system with warnings.

Detection Guidance

Monitor CPU usage spikes when processing TTL files with Wireshark versions 4.6.0 to 4.6.8. Use the command `tshark -r <file>` to test suspicious files and observe if CPU consumption rises uncontrollably or if excessive corruption warnings appear.

Impact Analysis

This vulnerability can cause denial of service by consuming excessive CPU resources when a user opens a malformed packet trace file. It may slow down or crash the system due to continuous retries and corruption warnings.

Compliance Impact

This vulnerability causes excessive CPU consumption and system resource exhaustion when processing malformed TTL files, which could lead to denial of service. For compliance with standards like GDPR or HIPAA, such resource exhaustion may impact availability of systems handling sensitive data, potentially violating availability requirements under these regulations.

Mitigation Strategies

Upgrade Wireshark to version 4.6.9 or later immediately to patch the infinite loop flaw. Avoid opening untrusted TTL files in vulnerable versions until patched.

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