How severe is CVE-2020-1945?

CVE-2020-1945 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-1945 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1945?

CVE-2020-1945 primarily affects Apache Ant. In total, 115 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-1945?

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

When was CVE-2020-1945 published?

CVE-2020-1945 was published on 2020-05-14 and last updated on 2026-06-17.

CVE-2020-1945

CVE-2020-1945 is a medium-severity vulnerability in Apache Ant with a CVSS 3.x base score of 6.3. 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-668.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 3.3
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Apache Ant
Published: 2020-05-14
Last modified: 2026-06-17

Description

Apache Ant 1.1 to 1.9.14 and 1.10.0 to 1.10.7 uses the default temporary directory identified by the Java system property java.io.tmpdir for several tasks and may thus leak sensitive information. The fixcrlf and replaceregexp tasks also copy files from the temporary directory back into the build tree allowing an attacker to inject modified source files into the build process.

Frequently asked questions

What is CVE-2020-1945?: Apache Ant 1.1 to 1.9.14 and 1.10.0 to 1.10.7 uses the default temporary directory identified by the Java system property java.io.tmpdir for several tasks and may thus leak sensitive information. The fixcrlf and replaceregexp tasks also copy files from the temporary directory back into the build tree allowing an attacker to inject modified source files into the build process.
How severe is CVE-2020-1945?: CVE-2020-1945 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-1945 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1945?: CVE-2020-1945 primarily affects Apache Ant. In total, 115 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-1945?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-1945 published?: CVE-2020-1945 was published on 2020-05-14 and last updated on 2026-06-17.

References

Affected products (115)

cpe:2.3:a:apache:ant:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_enterprise_collections:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_liquidity_management:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:business_process_management_suite:12.2.1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:business_process_management_suite:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:category_management_planning_\&_optimization:15.0.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_asap:7.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_metasolv_solution:6.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_order_and_service_management:7.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_order_and_service_management:7.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:data_integrator:12.2.1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:data_integrator:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:endeca_information_discovery_studio:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_repository:11.1.1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_investor_servicing:12.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_investor_servicing:12.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_investor_servicing:12.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_investor_servicing:14.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_investor_servicing:14.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_private_banking:12.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_private_banking:12.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:health_sciences_information_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:primavera_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:primavera_unifier:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:primavera_unifier:16.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:primavera_unifier:16.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:primavera_unifier:18.8:*:*:*:*:*:*:*
cpe:2.3:a:oracle:primavera_unifier:19.12:*:*:*:*:*:*:*
cpe:2.3:a:oracle:rapid_planning:12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:rapid_planning:12.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:real-time_decision_server:3.2.1.0:*:*:*:*:*:*:*

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