CVE-2026-93565 Netty RtspMethods - Authentication Bypass

Netty RtspMethods contains a broken authentication caused by RtspMethods.valueOf() silently stripping trailing control bytes before cache lookup, letting remote attackers send malformed RTSP methods that are accepted as valid, exploit requires sending RTSP requests with trailing control bytes.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.70% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-1035

Vendor fix

Update to the latest Netty version containing the fix for RtspMethods.valueOf()

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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