CVE-2026-95393: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
CSN.1 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
AI Analysis
Technical Summary
The CSN.1 protocol dissector in Wireshark versions >=4.4.0 <4.4.19 and >=4.6.0 <4.6.9 contains a heap-based buffer overflow vulnerability (CWE-122). This flaw can be triggered to cause a crash of the Wireshark application, leading to denial of service. The CVSS v3.1 score is 4.7 (medium severity), with an attack vector of local, high attack complexity, no privileges required, and user interaction needed. No known exploits are reported in the wild. No patch or remediation information is provided in the source data.
Potential Impact
Successful exploitation results in denial of service by crashing the Wireshark application. There is no impact on confidentiality or integrity. The attack requires local access, user interaction, and has high complexity, limiting the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid processing untrusted CSN.1 protocol data or use alternative tools. Monitor Wireshark vendor channels for updates.
CVE-2026-95393: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Description
CSN.1 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
CVSS v3.1
Score 4.7medium
Affected software
Wireshark Foundation
Wireshark
pkg:github/wireshark/wiresharkRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The CSN.1 protocol dissector in Wireshark versions >=4.4.0 <4.4.19 and >=4.6.0 <4.6.9 contains a heap-based buffer overflow vulnerability (CWE-122). This flaw can be triggered to cause a crash of the Wireshark application, leading to denial of service. The CVSS v3.1 score is 4.7 (medium severity), with an attack vector of local, high attack complexity, no privileges required, and user interaction needed. No known exploits are reported in the wild. No patch or remediation information is provided in the source data.
Potential Impact
Successful exploitation results in denial of service by crashing the Wireshark application. There is no impact on confidentiality or integrity. The attack requires local access, user interaction, and has high complexity, limiting the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid processing untrusted CSN.1 protocol data or use alternative tools. Monitor Wireshark vendor channels for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-09-22T05:34:31.672Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abb897df7a7c54106284f29
Added to database: 09/29/2026, 09:48:45 UTC
Last enriched: 09/29/2026, 10:04:34 UTC
Last updated: 09/29/2026, 18:20:12 UTC
Views: 10
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