How severe is CVE-2025-33042?

CVE-2025-33042 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-33042 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-33042?

CVE-2025-33042 primarily affects Apache Avro. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-33042?

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.

Does CVE-2025-33042 have an EU (EUVD) identifier?

Yes. CVE-2025-33042 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206910.

When was CVE-2025-33042 published?

CVE-2025-33042 was published on 2026-02-13 and last updated on 2026-06-17.

CVE-2025-33042

CVE-2025-33042 is a high-severity vulnerability in Apache Avro with a CVSS 3.x base score of 7.3. 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: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206910
Weakness: CWE-94
Affected product: Apache Avro
Published: 2026-02-13
Last modified: 2026-06-17

Description

Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Avro Java SDK when generating specific records from untrusted Avro schemas. This issue affects Apache Avro Java SDK: all versions through 1.11.4 and version 1.12.0. Users are recommended to upgrade to version 1.12.1 or 1.11.5, which fix the issue.

Frequently asked questions

What is CVE-2025-33042?: Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Avro Java SDK when generating specific records from untrusted Avro schemas. This issue affects Apache Avro Java SDK: all versions through 1.11.4 and version 1.12.0. Users are recommended to upgrade to version 1.12.1 or 1.11.5, which fix the issue.
How severe is CVE-2025-33042?: CVE-2025-33042 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-33042 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-33042?: CVE-2025-33042 primarily affects Apache Avro. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-33042?: 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.
Does CVE-2025-33042 have an EU (EUVD) identifier?: Yes. CVE-2025-33042 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206910.
When was CVE-2025-33042 published?: CVE-2025-33042 was published on 2026-02-13 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:apache:avro:*:*:*:*:*:-:*:*
cpe:2.3:a:apache:avro:1.12.0:-:*:*:*:-:*:*
cpe:2.3:a:apache:avro:1.12.0:rc0:*:*:*:-:*:*
cpe:2.3:a:apache:avro:1.12.0:rc1:*:*:*:-:*:*

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