Vulnerability Report

CVE-2009-4556

Title: Quickheal Antivirus Plus 2009 Auth Bypass

Auth Bypass

Proof Of Concept

PoC Available for CVE-2009-4556

CWE Category CWE-264

Published Date Jan 04, 2010

Modified Date Jun 16, 2026

Exploit Status Available

Score 7.2 CVSS v2.0

Exploit Probability (EPSS)

0.71%

Vulnerability Summary

CVE-2009-4556: Quick Heal AntiVirus Plus 2009 10.00 SP1 and Quick Heal Total Security 2009 10.00 SP1 use weak permissions (Everyone: Full Control) for the product files, which allows local users to gain privileges by replacing executables with Trojan horse programs, as demonstrated by replacing quhlpsvc.exe.

Impacted Vendors

quickheal 2

Reference Links

http://secunia.com/advisories/37033 http://www.securityfocus.com/archive/1/507121/100/0/threaded http://www.securityfocus.com/bid/36662 https://exchange.xforce.ibmcloud.com/vulnerabilities/53746 http://secunia.com/advisories/37033 http://www.securityfocus.com/archive/1/507121/100/0/threaded http://www.securityfocus.com/bid/36662 https://exchange.xforce.ibmcloud.com/vulnerabilities/53746

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.2

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-4556 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/10084

View Code

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 09, 2025 MODIFIED

Vulnerability data or affected products updated.

January 04, 2010 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.