How severe is CVE-2012-4392?

CVE-2012-4392 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2012-4392 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4392?

CVE-2012-4392 affects Owncloud Owncloud Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-4392?

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-2012-4392 published?

CVE-2012-4392 was published on 2012-09-05 and last updated on 2026-06-16.

CVE-2012-4392

CVE-2012-4392 is a high-severity vulnerability in Owncloud Owncloud Server with a CVSS 2.0 base score of 7.5. 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-287.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Owncloud Owncloud Server
Published: 2012-09-05
Last modified: 2026-06-16

Description

index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a crafted oc_token cookie value.

Frequently asked questions

What is CVE-2012-4392?: index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a crafted oc_token cookie value.
How severe is CVE-2012-4392?: CVE-2012-4392 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2012-4392 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4392?: CVE-2012-4392 affects Owncloud Owncloud Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-4392?: 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-2012-4392 published?: CVE-2012-4392 was published on 2012-09-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:owncloud:owncloud_server:4.0.7:*:*:*:*:*:*:*

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