How severe is CVE-2012-0838?

CVE-2012-0838 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2012-0838 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-2012-0838?

CVE-2012-0838 affects Apache Struts. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-0838?

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-2012-0838 published?

CVE-2012-0838 was published on 2012-03-02 and last updated on 2026-06-16.

CVE-2012-0838

CVE-2012-0838 is a critical-severity vulnerability in Apache Struts with a CVSS 2.0 base score of 10.0. 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-20.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Apache Struts
Published: 2012-03-02
Last modified: 2026-06-16

Description

Apache Struts 2 before 2.2.3.1 evaluates a string as an OGNL expression during the handling of a conversion error, which allows remote attackers to modify run-time data values, and consequently execute arbitrary code, via invalid input to a field.

Frequently asked questions

What is CVE-2012-0838?: Apache Struts 2 before 2.2.3.1 evaluates a string as an OGNL expression during the handling of a conversion error, which allows remote attackers to modify run-time data values, and consequently execute arbitrary code, via invalid input to a field.
How severe is CVE-2012-0838?: CVE-2012-0838 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2012-0838 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-2012-0838?: CVE-2012-0838 affects Apache Struts. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-0838?: 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-2012-0838 published?: CVE-2012-0838 was published on 2012-03-02 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*

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