How severe is CVE-2009-0034?

CVE-2009-0034 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2009-0034 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0034?

CVE-2009-0034 primarily affects Gratisoft Sudo. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0034?

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-2009-0034 published?

CVE-2009-0034 was published on 2009-01-30 and last updated on 2026-06-16.

CVE-2009-0034

CVE-2009-0034 is a high-severity vulnerability in Gratisoft Sudo with a CVSS 3.x base score of 7.8. 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-863.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.9
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Gratisoft Sudo
Published: 2009-01-30
Last modified: 2026-06-16

Description

parse.c in sudo 1.6.9p17 through 1.6.9p19 does not properly interpret a system group (aka %group) in the sudoers file during authorization decisions for a user who belongs to that group, which allows local users to leverage an applicable sudoers file and gain root privileges via a sudo command.

Frequently asked questions

What is CVE-2009-0034?: parse.c in sudo 1.6.9p17 through 1.6.9p19 does not properly interpret a system group (aka %group) in the sudoers file during authorization decisions for a user who belongs to that group, which allows local users to leverage an applicable sudoers file and gain root privileges via a sudo command.
How severe is CVE-2009-0034?: CVE-2009-0034 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2009-0034 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0034?: CVE-2009-0034 primarily affects Gratisoft Sudo. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0034?: 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-2009-0034 published?: CVE-2009-0034 was published on 2009-01-30 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:gratisoft:sudo:1.6.9:p17:*:*:*:*:*:*
cpe:2.3:a:gratisoft:sudo:1.6.9:p18:*:*:*:*:*:*
cpe:2.3:a:gratisoft:sudo:1.6.9:p19:*:*:*:*:*:*
cpe:2.3:o:vmware:esx:4.0:*:*:*:*:*:*:*

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