CVE-2008-5911

Name: CVE-2008-5911
Creator: NVD / NIST
Published: 2009-01-20T16:00:00.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 6.19%

Last modified Jun 16, 2026

CVE-2008-5911 is a vulnerability of currently unknown severity. Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request.. EPSS estimates a 6.19% chance of exploitation in the next 30 days.

Description

Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request.

Metrics

EPSS Probability

6.19%

92.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Realnetworks	Helix Server	11.0
Realnetworks	Helix Server	12.0.0
Realnetworks	Helix Server Mobile	11.0
Realnetworks	Helix Server Mobile	12.0.0

References

Timeline

Published: Jan 20, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2008-5911?

How severe is CVE-2008-5911?

Severity scoring for CVE-2008-5911 is pending analysis. The EPSS model estimates a 6.19% probability of exploitation in the next 30 days.

How do I fix CVE-2008-5911?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2008-5911?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST