What’s Vulnerable › Vulnerabilities

CVE-2026-3203: Buffer Over-read in Wireshark

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-25 · updated 2026-06-17
• Weakness: CWE-126

Description

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service

Affected products

• Wireshark Foundation Wireshark: from 4.4.0 before 4.4.14; from 4.6.0 before 4.6.4 — fixed in 4.4.14, 4.6.4

How to fix

Upgrade to a fixed version: Wireshark Foundation Wireshark 4.4.14, 4.6.4. Check the vendor advisory for mitigations.

References

• https://gitlab.com/wireshark/wireshark/-/issues/21009
• https://www.wireshark.org/security/wnpa-sec-2026-07.html

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