FKIE_CVE-2009-3376
Vulnerability from fkie_nvd - Published: 2009-10-29 14:30 - Updated: 2026-06-16 23:11
Severity
Summary
Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, does not properly handle a right-to-left override (aka RLO or U+202E) Unicode character in a download filename, which allows remote attackers to spoof file extensions via a crafted filename, as demonstrated by displaying a non-executable extension for an executable file.
References
Impacted products
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"value": "Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, does not properly handle a right-to-left override (aka RLO or U+202E) Unicode character in a download filename, which allows remote attackers to spoof file extensions via a crafted filename, as demonstrated by displaying a non-executable extension for an executable file."
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"value": "Mozilla Firefox anteriores a v3.0.15 y v3.5.x anteriores a v3.5.4, y SeaMonkey anteriores a v2.0, no maneja adecuadamente una anulaci\u00f3n de car\u00e1cter Unicode \"right-to-left\" (tambi\u00e9n conocido como RLO o U+202E) en un nombre de fichero de descarga, lo que permite a atacantes remotos falsificar las extensiones de fichero a trav\u00e9s de un nombre de fichero manipulado como se demuestra en una extensi\u00f3n no ejecutable de un fichero ejecutable."
}
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"id": "CVE-2009-3376",
"lastModified": "2026-06-16T23:11:29.263",
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"value": "CWE-16"
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}
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Nomenclature
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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