How severe is CVE-2013-3631?

CVE-2013-3631 has a CVSS 2.0 base score of 6.0, rated medium severity.

Is CVE-2013-3631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3631?

CVE-2013-3631 primarily affects Nas4free. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3631?

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

When was CVE-2013-3631 published?

CVE-2013-3631 was published on 2013-11-02 and last updated on 2026-06-16.

CVE-2013-3631

CVE-2013-3631 is a medium-severity vulnerability in Nas4free with a CVSS 2.0 base score of 6.0. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: Medium (CVSS 2.0 base score 6.0)
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Nas4free
Published: 2013-11-02
Last modified: 2026-06-16

Description

NAS4Free 9.1.0.1.804 and earlier allows remote authenticated users to execute arbitrary PHP code via a request to exec.php, aka the "Advanced | Execute Command" feature. NOTE: this issue might not be a vulnerability, since it appears to be part of legitimate, intentionally-exposed functionality by the developer and is allowed within the intended security policy.

Frequently asked questions

What is CVE-2013-3631?: NAS4Free 9.1.0.1.804 and earlier allows remote authenticated users to execute arbitrary PHP code via a request to exec.php, aka the "Advanced | Execute Command" feature. NOTE: this issue might not be a vulnerability, since it appears to be part of legitimate, intentionally-exposed functionality by the developer and is allowed within the intended security policy.
How severe is CVE-2013-3631?: CVE-2013-3631 has a CVSS 2.0 base score of 6.0, rated medium severity.
Is CVE-2013-3631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3631?: CVE-2013-3631 primarily affects Nas4free. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3631?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-3631 published?: CVE-2013-3631 was published on 2013-11-02 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:nas4free:nas4free:*:*:*:*:*:*:*:*
cpe:2.3:a:nas4free:nas4free:9.1.0.1.798:*:*:*:*:*:*:*

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