CVE-2006-3017

CVE-2006-3017 is a critical-severity vulnerability in Php with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

zend_hash_del_key_or_index in zend_hash.c in PHP before 4.4.3 and 5.x before 5.1.3 can cause zend_hash_del to delete the wrong element, which prevents a variable from being unset even when the PHP unset function is called, which might cause the variable's value to be used in security-relevant operations.

Frequently asked questions

What is CVE-2006-3017?
zend_hash_del_key_or_index in zend_hash.c in PHP before 4.4.3 and 5.x before 5.1.3 can cause zend_hash_del to delete the wrong element, which prevents a variable from being unset even when the PHP unset function is called, which might cause the variable's value to be used in security-relevant operations.
How severe is CVE-2006-3017?
CVE-2006-3017 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2006-3017 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-3017?
CVE-2006-3017 primarily affects Php. In total, 85 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-3017?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2006-3017 published?
CVE-2006-3017 was published on 2006-06-14 and last updated on 2026-06-16.

References

Affected products (85)

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Threat intelligence

Threat-intel indicators referencing this CVE: