How severe is CVE-2010-4767?

CVE-2010-4767 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-4767 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-4767?

CVE-2010-4767 primarily affects Otrs. In total, 81 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-4767?

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

When was CVE-2010-4767 published?

CVE-2010-4767 was published on 2011-03-18 and last updated on 2026-06-16.

CVE-2010-4767

CVE-2010-4767 is a medium-severity vulnerability in Otrs with a CVSS 2.0 base score of 5.0. 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: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Otrs
Published: 2011-03-18
Last modified: 2026-06-16

Description

Open Ticket Request System (OTRS) before 2.3.6 does not properly handle e-mail messages in which the From line contains UTF-8 characters associated with diacritical marks and an invalid charset, which allows remote attackers to cause a denial of service (duplicate tickets and duplicate auto-responses) by sending a crafted message to a POP3 mailbox.

Frequently asked questions

What is CVE-2010-4767?: Open Ticket Request System (OTRS) before 2.3.6 does not properly handle e-mail messages in which the From line contains UTF-8 characters associated with diacritical marks and an invalid charset, which allows remote attackers to cause a denial of service (duplicate tickets and duplicate auto-responses) by sending a crafted message to a POP3 mailbox.
How severe is CVE-2010-4767?: CVE-2010-4767 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-4767 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4767?: CVE-2010-4767 primarily affects Otrs. In total, 81 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-4767?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-4767 published?: CVE-2010-4767 was published on 2011-03-18 and last updated on 2026-06-16.

References

Affected products (81)

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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