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

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HIGH

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

Published Jan 4, 2010

7.2

HIGH

CVSS 2.0

EPSS 0.70%

Description

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.70% 0.00705

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.00705

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	0.70% (0.00705)	51.65th	v5 (v2026.06.15)
Jun 15, 2026	0.70% (0.00705)	48.30th	v5 (v2026.06.15)
Mar 17, 2025	0.08% (0.00081)	21.37th	v4 (v2025.03.14)
Dec 12, 2024	0.04% (0.00042)	0.34th	v3 (v2023.03.01)
Aug 28, 2023	0.04% (0.00042)	0.46th	v3 (v2023.03.01)
Mar 7, 2023	0.05% (0.00050)	16.55th	v3 (v2023.03.01)
Mar 6, 2023	1.76% (0.01761)	76.53th	v2 (v2022.01.01)
Feb 23, 2023	1.76% (0.01761)	76.48th	v2 (v2022.01.01)
Apr 1, 2022	1.76% (0.01761)	74.44th	v2 (v2022.01.01)
Feb 4, 2022	1.76% (0.01761)	53.69th	v2 (v2022.01.01)

Weaknesses (1)

CWE-264

References (4)

http://secunia.com/advisories/37033
third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/archive/1/507121/100/0/threaded
mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/36662
vdb-entryx_refsource_BID
https://exchange.xforce.ibmcloud.com/vulnerabilities/53746
vdb-entryx_refsource_XF

Link	Providers	Tags
http://secunia.com/advisories/37033		third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/archive/1/507121/100/0/threaded		mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/36662		vdb-entryx_refsource_BID
https://exchange.xforce.ibmcloud.com/vulnerabilities/53746		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jan 4, 2010

Updated Aug 7, 2024

Reserved Jan 4, 2010

Link CVE-2009-4556

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2009-4556

Red Hat

Severity n/a

Public date n/a

Links CVE-2009-4556