How severe is CVE-2009-2450?

CVE-2009-2450 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2009-2450 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2450?

CVE-2009-2450 primarily affects Tallemu Online Armor Personal Firewall Av+. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2450?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-2450 published?

CVE-2009-2450 was published on 2009-07-13 and last updated on 2026-06-16.

CVE-2009-2450

CVE-2009-2450 is a high-severity vulnerability in Tallemu Online Armor Personal Firewall Av+ with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Tallemu Online Armor Personal Firewall Av+
Published: 2009-07-13
Last modified: 2026-06-16

Description

The OAmon.sys kernel driver 3.1.0.0 and earlier in Tall Emu Online Armor Personal Firewall AV+ before 3.5.0.12, and Personal Firewall 3.5 before 3.5.0.14, allows local users to gain privileges via crafted METHOD_NEITHER IOCTL requests to \Device\OAmon containing arbitrary kernel addresses, as demonstrated using the 0x830020C3 IOCTL.

Frequently asked questions

What is CVE-2009-2450?: The OAmon.sys kernel driver 3.1.0.0 and earlier in Tall Emu Online Armor Personal Firewall AV+ before 3.5.0.12, and Personal Firewall 3.5 before 3.5.0.14, allows local users to gain privileges via crafted METHOD_NEITHER IOCTL requests to \Device\OAmon containing arbitrary kernel addresses, as demonstrated using the 0x830020C3 IOCTL.
How severe is CVE-2009-2450?: CVE-2009-2450 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2009-2450 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2450?: CVE-2009-2450 primarily affects Tallemu Online Armor Personal Firewall Av+. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2450?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-2450 published?: CVE-2009-2450 was published on 2009-07-13 and last updated on 2026-06-16.

References

Affected products (16)

cpe:2.3:a:tallemu:online_armor_personal_firewall_av\+:*:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:online_armor_personal_firewall_av\+:3.5.0.6:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:online_armor_personal_firewall_av\+:3.5.0.9:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:*:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.4:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.5:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.6:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.7:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.8:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.9:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.10:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.11:*:*:*:*:*:*:*
cpe:2.3:a:tallemu:personal_firewall:3.5.0.12:*:*:*:*:*:*:*

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