CVE-2008-5911: n/a vulnerability

CVE-2008-5911: Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 11:13 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old RealNetworks Helix Server flaw where specially formed network requests could crash the service or potentially let an attacker run code on the server. Business urgency depends on whether any legacy Helix streaming infrastructure remains exposed. Exposure is most likely in legacy media streaming environments still running RealNetworks Helix Server or Helix Mobile Server. Internet-facing RTSP or related service access would raise urgency. The provided data does not identify specific CPEs or deployment prevalence. Prioritize if Helix services remain internet-facing or support business-critical streaming. For organizations without RealNetworks Helix infrastructure, this is primarily a legacy asset verification item. Mitigation focus: Inventory Helix Server and Helix Mobile Server instances.; Upgrade 11.x systems to 11.1.8 or later.; Upgrade 12.x systems to 12.0.1 or later..

Prepared: Jun 28, 2026, 11:41 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup

cve · low confidence lookup

CVE-2008-5911 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 20, 2009, 15:26 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.