CVE-2010-4764

CVE-2010-4764 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-255.

Key facts

Description

Open Ticket Request System (OTRS) before 2.4.10, and 3.x before 3.0.3, does not present warnings about incoming encrypted e-mail messages that were based on revoked PGP or GPG keys, which makes it easier for remote attackers to spoof e-mail communication by leveraging a key that has a revocation signature.

Frequently asked questions

What is CVE-2010-4764?
Open Ticket Request System (OTRS) before 2.4.10, and 3.x before 3.0.3, does not present warnings about incoming encrypted e-mail messages that were based on revoked PGP or GPG keys, which makes it easier for remote attackers to spoof e-mail communication by leveraging a key that has a revocation signature.
How severe is CVE-2010-4764?
CVE-2010-4764 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-4764 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4764?
CVE-2010-4764 primarily affects Otrs. In total, 106 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-4764?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-4764 published?
CVE-2010-4764 was published on 2011-03-18 and last updated on 2026-06-16.

References

Affected products (106)

More vulnerabilities in Otrs

All CVEs affecting Otrs →

Other CWE-255 (Credentials Management Errors) vulnerabilities

Browse all CWE-255 (Credentials Management Errors) vulnerabilities →