How severe is CVE-2011-3203?

CVE-2011-3203 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2011-3203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3203?

CVE-2011-3203 affects Jcow Jcow Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-3203?

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-2011-3203 published?

CVE-2011-3203 was published on 2020-01-14 and last updated on 2026-06-16.

CVE-2011-3203

CVE-2011-3203 is a critical-severity vulnerability in Jcow Jcow Cms with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Jcow Jcow Cms
Published: 2020-01-14
Last modified: 2026-06-16

Description

A Code Execution vulnerability exists the attachment parameter to index.php in Jcow CMS 4.x to 4.2 and 5.2 to 5.2.

Frequently asked questions

What is CVE-2011-3203?: A Code Execution vulnerability exists the attachment parameter to index.php in Jcow CMS 4.x to 4.2 and 5.2 to 5.2.
How severe is CVE-2011-3203?: CVE-2011-3203 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2011-3203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3203?: CVE-2011-3203 affects Jcow Jcow Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-3203?: 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-2011-3203 published?: CVE-2011-3203 was published on 2020-01-14 and last updated on 2026-06-16.

References

https://www.openwall.com/lists/oss-security/2011/08/30/6

Affected products (1)

cpe:2.3:a:jcow:jcow_cms:*:*:*:*:*:*:*:*

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