How serious is CVE-2026-3203?

This vulnerability has a CVSS score of 7.5 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-3203?

Yes, proof-of-concept exploit code for CVE-2026-3203 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-3203?

CVE-2026-3203 affects wireshark wireshark. Check the full CVE details for specific version information.

How do I fix CVE-2026-3203?

To remediate CVE-2026-3203, check for security patches from wireshark. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-3203

High

|7.5

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to crash Wireshark, causing a denial of service, which means users can't analyze network traffic while the program is down. It affects specific versions of Wireshark and can be triggered by sending specially crafted RF4CE Profile protocol packets to the application.

Technical 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

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactNone

Integrity ImpactNone

Availability ImpactHigh

ScopeUnchanged

Vector String

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

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$2,053($1K-$5K)

Vendor Response

Grade APatched in 0 days

Quick Information

Published

Feb 25, 2026

about 1 month ago

Last Modified

Feb 26, 2026

about 1 month ago

Vendor

wireshark

Product

wireshark

Related Vulnerabilities

CVE-2026-3202High

An attacker can cause Wireshark to crash, leading to a denial of service, by sending specially crafted packets that exploit a flaw in how the software processes the NTS-KE protocol. This vulnerability affects versions 4.6.0 to 4.6.3, so users running these versions are at risk.

CVE-2026-3201High

An attacker can cause Wireshark to crash by sending specially crafted USB HID protocol data, leading to a denial of service. This vulnerability affects specific versions of Wireshark, so users running those versions are at risk if they analyze malicious data.