How severe is CVE-2007-1581?

CVE-2007-1581 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-1581 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1581?

CVE-2007-1581 primarily affects Php. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-1581?

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-2007-1581 published?

CVE-2007-1581 was published on 2007-03-21 and last updated on 2026-06-16.

CVE-2007-1581

CVE-2007-1581 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. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Php
Published: 2007-03-21
Last modified: 2026-06-16

Description

The resource system in PHP 5.0.0 through 5.2.1 allows context-dependent attackers to execute arbitrary code by interrupting the hash_update_file function via a userspace (1) error or (2) stream handler, which can then be used to destroy and modify internal resources. NOTE: it was later reported that PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 are also affected.

Frequently asked questions

What is CVE-2007-1581?: The resource system in PHP 5.0.0 through 5.2.1 allows context-dependent attackers to execute arbitrary code by interrupting the hash_update_file function via a userspace (1) error or (2) stream handler, which can then be used to destroy and modify internal resources. NOTE: it was later reported that PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 are also affected.
How severe is CVE-2007-1581?: CVE-2007-1581 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-1581 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1581?: CVE-2007-1581 primarily affects Php. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-1581?: 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-2007-1581 published?: CVE-2007-1581 was published on 2007-03-21 and last updated on 2026-06-16.

References

Affected products (33)

cpe:2.3:a:php:php:5.0:rc1:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0:rc2:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0:rc3:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0.4:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.0.5:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.2:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.3:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.4:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.5:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.6:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.1:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.2:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.3:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.4:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.5:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.6:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.7:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.8:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.9:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.10:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.11:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.12:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.2.13:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.0:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.1:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.2:*:*:*:*:*:*:*

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Other CWE-94 (Code Injection) vulnerabilities

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CVE-2026-25470 — Critical (CVSS 10.0): Improper Control of Generation of Code ('Code Injection') vulnerability in ACPT ACPT (Pro) - Custom Post Types Plugin…
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Threat intelligence

Threat-intel indicators referencing this CVE:

82.199.197.245 (ipv4-addr)
58.221.244.34 (ipv4-addr)
121.164.135.251 (ipv4-addr)
76.133.97.153 (ipv4-addr)
223.82.97.51 (ipv4-addr)
183.6.115.88 (ipv4-addr)
171.100.156.38 (ipv4-addr)
116.232.75.154 (ipv4-addr)