How severe is CVE-2007-1886?

CVE-2007-1886 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2007-1886 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-2007-1886?

CVE-2007-1886 primarily affects Php. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-1886?

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

When was CVE-2007-1886 published?

CVE-2007-1886 was published on 2007-04-06 and last updated on 2026-06-16.

CVE-2007-1886

CVE-2007-1886 is a medium-severity vulnerability in Php with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Php
Published: 2007-04-06
Last modified: 2026-06-16

Description

Integer overflow in the str_replace function in PHP 4.4.5 and PHP 5.2.1 allows context-dependent attackers to have an unknown impact via a single character search string in conjunction with a single character replacement string, which causes an "off by one overflow."

Frequently asked questions

What is CVE-2007-1886?: Integer overflow in the str_replace function in PHP 4.4.5 and PHP 5.2.1 allows context-dependent attackers to have an unknown impact via a single character search string in conjunction with a single character replacement string, which causes an "off by one overflow."
How severe is CVE-2007-1886?: CVE-2007-1886 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2007-1886 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-2007-1886?: CVE-2007-1886 primarily affects Php. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-1886?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-1886 published?: CVE-2007-1886 was published on 2007-04-06 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:php:php:4.4.5:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.1:*:*:*:*:*:*:*

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