CVE-2007-2511

CVE-2007-2511 is a high-severity vulnerability in Php with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: High (CVSS 2.0 base score 7.2)
• EPSS exploit prediction: 0% (36th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Php
• Published: 2007-05-09
• Last modified: 2026-06-16

Description

Buffer overflow in the user_filter_factory_create function in PHP before 5.2.2 has unknown impact and local attack vectors.

Frequently asked questions

What is CVE-2007-2511?

Buffer overflow in the user_filter_factory_create function in PHP before 5.2.2 has unknown impact and local attack vectors.

How severe is CVE-2007-2511?

CVE-2007-2511 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2007-2511 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-2511?

CVE-2007-2511 primarily affects Php. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-2511?

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-2007-2511 published?

CVE-2007-2511 was published on 2007-05-09 and last updated on 2026-06-16.

References

• http://lists.opensuse.org/opensuse-security-announce/2007-07/msg00006.html
• http://osvdb.org/34676
• http://secunia.com/advisories/25191
• http://secunia.com/advisories/25255
• http://secunia.com/advisories/25372
• http://secunia.com/advisories/25445
• http://secunia.com/advisories/26048
• http://security.gentoo.org/glsa/glsa-200705-19.xml
• http://us2.php.net/releases/5_2_2.php
• http://viewcvs.php.net/viewvc.cgi/php-src/ext/standard/user_filters.c?r1=1.31.2.4.2.5&r2=1.31.2.4.2.6
• http://www.mandriva.com/security/advisories?name=MDKSA-2007:102
• http://www.trustix.org/errata/2007/0017/
• http://www.ubuntu.com/usn/usn-462-1

Affected products (45)

• cpe:2.3:a:php:php:4.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.1:patch1:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.1:patch2:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.3:patch1:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.4:patch1:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.7:rc1:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.7:rc2:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.0.7:rc3:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.6:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.7:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.8:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.9:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.10:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.3.11:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:4.4.5:*:*:*:*:*:*:*

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• CVE-2011-3268 — Critical (CVSS 10.0): Buffer overflow in the crypt function in PHP before 5.3.7 allows context-dependent attackers to have an unspecified…
• CVE-2009-4143 — Critical (CVSS 10.0): PHP before 5.2.12 does not properly handle session data, which has unspecified impact and attack vectors related to (1)…
• CVE-2008-5557 — Critical (CVSS 10.0): Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0…

All CVEs affecting Php →

Threat intelligence

Threat-intel indicators referencing this CVE:

• 222.99.52.202 (ipv4-addr)
• 90.160.135.217 (ipv4-addr)
• 62.36.19.42 (ipv4-addr)
• 62.36.19.41 (ipv4-addr)