How severe is CVE-2009-5055?

CVE-2009-5055 has a CVSS 2.0 base score of 3.5, rated low severity.

Is CVE-2009-5055 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-5055?

CVE-2009-5055 primarily affects Otrs. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-5055?

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

When was CVE-2009-5055 published?

CVE-2009-5055 was published on 2011-03-18 and last updated on 2026-06-16.

CVE-2009-5055

CVE-2009-5055 is a low-severity vulnerability in Otrs with a CVSS 2.0 base score of 3.5. 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-264.

Key facts

Severity: Low (CVSS 2.0 base score 3.5)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Otrs
Published: 2011-03-18
Last modified: 2026-06-16

Description

Open Ticket Request System (OTRS) before 2.4.4 grants ticket access on the basis of single-digit substrings of the CustomerID value, which allows remote authenticated users to bypass intended access restrictions in opportunistic circumstances by visiting a ticket, as demonstrated by leveraging the CustomerID 12 account to read tickets that should be available only to CustomerID 1 or CustomerID 2.

Frequently asked questions

What is CVE-2009-5055?: Open Ticket Request System (OTRS) before 2.4.4 grants ticket access on the basis of single-digit substrings of the CustomerID value, which allows remote authenticated users to bypass intended access restrictions in opportunistic circumstances by visiting a ticket, as demonstrated by leveraging the CustomerID 12 account to read tickets that should be available only to CustomerID 1 or CustomerID 2.
How severe is CVE-2009-5055?: CVE-2009-5055 has a CVSS 2.0 base score of 3.5, rated low severity.
Is CVE-2009-5055 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-5055?: CVE-2009-5055 primarily affects Otrs. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-5055?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-5055 published?: CVE-2009-5055 was published on 2011-03-18 and last updated on 2026-06-16.

References

Affected products (91)

cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta1:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta2:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta3:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta4:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta5:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta6:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta7:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:0.5:beta8:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.0:rc3:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.1:rc1:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.2.0:beta1:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.2.0:beta2:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.2.0:beta3:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.0:beta1:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.0:beta2:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.0:beta3:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.0:beta4:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:1.3.3:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:2.0.0:beta4:*:*:*:*:*:*

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