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Vulnerability record · CVE-2012-2420 · published 25 April 2012

CVE-2012-2420: Intuit quickbooks information exposure vulnerability

Intuit · Quickbooks

The intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, might allow remote attackers to obtain sensitive information via a URI with a % (percent) character as its (1) last or (2) second-to-last character, in situations where a certain "post-URL data" buffer contains a 0x0000 character but a buffer overflow does not occur.

1.8 CVSS 2.0 Low EPSS 1.3% · top 30.6% CWE-200 · Information exposure
1.8CVSS 2.0 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, might allow remote attackers to obtain sensitive information via a URI with a % (percent) character as its (1) last or (2) second-to-last character, in situations where a certain "post-URL data" buffer contains a 0x0000 character but a buffer overflow does not occur.

AV:A/AC:H/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/80820
http://www.kb.cert.org/vuls/id/232979 US Government Resource
http://www.securityfocus.com/archive/1/522138 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/74548
http://osvdb.org/80820
http://www.kb.cert.org/vuls/id/232979 US Government Resource
http://www.securityfocus.com/archive/1/522138 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/74548

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2007-6387Intuit bookkeeping memory buffer overflow vulnerabilityMultiple stack-based buffer overflows in the awApi4.AnswerWorks.1 ActiveX control in awApi4.dll 4.0.0.42, as used by Vantage Linguistics AnswerWorks,…EPSS 38%9.3CVE-2007-0322Intuit quickbooks memory buffer overflow vulnerabilityMultiple stack-based buffer overflows in the Intuit QuickBooks Online Edition ActiveX control before 10 allow remote attackers to execute arbitrary c…EPSS 6.0%9.3CVE-2007-4471Intuit quickbooks path traversal vulnerabilityMultiple unspecified vulnerabilities in the Intuit QuickBooks Online Edition ActiveX control before 10 allow remote attackers to create or overwrite …EPSS 5.2%6.9CVE-2010-5198Intuit quickbooks vulnerabilityMultiple untrusted search path vulnerabilities in Intuit QuickBooks 2010 allow local users to gain privileges via a Trojan horse (1) dbicudtx11.dll, …EPSS 0.35%6.8CVE-2012-2418Intuit quickbooks memory buffer overflow vulnerabilityHeap-based buffer overflow in the intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit…EPSS 3.2%2.9CVE-2012-2422Intuit quickbooks information exposure vulnerabilityIntuit QuickBooks 2009 through 2012 might allow remote attackers to obtain pathname information via the qbwc://docontrol/GetCompanyFile functionality.EPSS 1.1%1.8CVE-2012-2419Intuit quickbooks vulnerabilityMemory leak in the intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 200…EPSS 1.0%1.8CVE-2012-2421Intuit quickbooks path traversal vulnerabilityAbsolute path traversal vulnerability in the intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dl…EPSS 0.80%

Source: NIST National Vulnerability Database (record CVE-2012-2420), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.