CVE-2025-9817

HIGH
Published Sep 3, 2025 Modified Dec 5, 2025 CWE-476

Description

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
wireshark wireshark
wireshark wireshark

References

Frequently Asked Questions

What is CVE-2025-9817? +
SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-9817? +
CVE-2025-9817 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2025-9817? +
CVE-2025-9817 affects products from wireshark, specifically: wireshark. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-9817? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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