CVE-2011-4559

CVE-2011-4559 is a high-severity vulnerability in Vtiger Vtiger Crm with a CVSS 2.0 base score of 7.5. 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-89.

Key facts

Description

SQL injection vulnerability in the Calendar module in vTiger CRM 5.2.1 and earlier allows remote attackers to execute arbitrary SQL commands via the onlyforuser parameter in an index action to index.php.

Frequently asked questions

What is CVE-2011-4559?
SQL injection vulnerability in the Calendar module in vTiger CRM 5.2.1 and earlier allows remote attackers to execute arbitrary SQL commands via the onlyforuser parameter in an index action to index.php.
How severe is CVE-2011-4559?
CVE-2011-4559 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2011-4559 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4559?
CVE-2011-4559 primarily affects Vtiger Vtiger Crm. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4559?
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-2011-4559 published?
CVE-2011-4559 was published on 2011-11-28 and last updated on 2026-06-16.

References

Affected products (20)

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