How severe is CVE-2009-2918?

CVE-2009-2918 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2009-2918 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2918?

CVE-2009-2918 affects Thegreenbow Thegreenbow Vpn Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-2918?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-2918 published?

CVE-2009-2918 was published on 2009-08-21 and last updated on 2026-06-16.

CVE-2009-2918

CVE-2009-2918 is a low-severity vulnerability in Thegreenbow Thegreenbow Vpn Client with a CVSS 2.0 base score of 2.1. 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-20.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Thegreenbow Thegreenbow Vpn Client
Published: 2009-08-21
Last modified: 2026-06-16

Description

The tgbvpn.sys driver in TheGreenBow IPSec VPN Client 4.61.003 allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted request to the 0x80000034 IOCTL, probably involving an input or output buffer size of 0.

Frequently asked questions

What is CVE-2009-2918?: The tgbvpn.sys driver in TheGreenBow IPSec VPN Client 4.61.003 allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted request to the 0x80000034 IOCTL, probably involving an input or output buffer size of 0.
How severe is CVE-2009-2918?: CVE-2009-2918 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2009-2918 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2918?: CVE-2009-2918 affects Thegreenbow Thegreenbow Vpn Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-2918?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2918 published?: CVE-2009-2918 was published on 2009-08-21 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:thegreenbow:thegreenbow_vpn_client:4.61.003:*:*:*:*:*:*:*

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