ConvertDialogOptions. The manipulation leads to memory corruption.This vulnerability is handled as CVE-2015-4521. The attack may be launched remotely. There is no exploit available.
It is recommended to upgrade the affected component.
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CVE-2015-4521 | Mozilla Firefox up to 40 ConvertDialogOptions memory corruption (USN-2743-1 / BID-76816)
A vulnerability was found in Mozilla Firefox up to 40. It has been rated as critical. Affected by this issue is the function ConvertDialogOptions. The manipulation leads to memory corruption. This vulnerability is handled as…
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A vulnerability was found in Mozilla Firefox up to 40. It has been rated as critical. Affected by this issue is the function
This vulnerability is handled as CVE-2015-4521. The attack may be launched remotely. There is no exploit available.
It is recommended to upgrade the affected component.
This vulnerability is handled as CVE-2015-4521. The attack may be launched remotely. There is no exploit available.
It is recommended to upgrade the affected component.
IoC Intelligence (1 Indikatoren)
CVE-2015-4521
IR-PLAYBOOK-VULN-REMEDIATION
MEDIUMSOC Incident Playbook: Vulnerability Remediation & Verification
1-Click Detection Engineering: Sigma & YARA Rules
SOC Readytitle: Detect Exploitation - CVE-2015-4521 | Mozilla Firefox up to 40 ConvertDialogOptions memory corruption (USN-2743-1 / BID-76816)
id: c4395092-242f-4117-ac95-d2dcdca0e377
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2015-4521 | Mozilla Firefo" ascii wide
condition:
any of them
}
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