CVE-2013-6666: n/a vulnerability

CVE-2013-6666: The PepperFlashRendererHost::OnNavigate function in renderer/pepper/pepper_flash_renderer_host.cc in Google...

The PepperFlashRendererHost::OnNavigate function in renderer/pepper/pepper_flash_renderer_host.cc in Google Chrome before 33.0.1750.146 does not verify that all headers are Cross-Origin Resource Sharing (CORS) simple headers before proceeding with a PPB_Flash.Navigate operation, which might allow remote attackers to bypass intended CORS restrictions via an inappropriate header.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 17:46 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2013-6666 is an old Google Chrome/Pepper Flash browser policy flaw. A malicious remote site might bypass intended CORS restrictions by using an inappropriate header during Flash navigation. The provided sources do not show code execution, privilege escalation, or active exploitation. Exposure is most plausible on legacy Chrome or Chromium-derived builds older than 33.0.1750.146, including packaged distributions that had not applied the 2014 vendor update. Modern fully updated browsers are unlikely to be exposed based on the provided sources. Prioritize remediation only if legacy Chrome, Chromium, or embedded Pepper Flash remains in use. For current managed browsers, this should be a historical hygiene check rather than an emergency response. Mitigation focus: Upgrade Chrome or Chromium-derived browsers beyond 33.0.1750.146.; Apply applicable Debian security updates from DSA-2883 for affected packages.; Check vendor guidance for embedded Chromium or Pepper Flash forks..

Prepared: Jun 14, 2026, 14:50 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

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 5, 2014, 02:00 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

3Source 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
https://src.chromium.org/viewvc/chrome?revision=249114&view=revisionCVE reference · x_refsource_CONFIRM
https://code.google.com/p/chromium/issues/detail?id=332023CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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