How severe is CVE-2020-11979?

CVE-2020-11979 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-11979 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11979?

CVE-2020-11979 primarily affects Apache Ant. In total, 70 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-11979?

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-2020-11979 published?

CVE-2020-11979 was published on 2020-10-01 and last updated on 2026-06-17.

CVE-2020-11979

CVE-2020-11979 is a high-severity vulnerability in Apache Ant with a CVSS 3.x 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-379.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-379
Affected product: Apache Ant
Published: 2020-10-01
Last modified: 2026-06-17

Description

As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection, effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.

Frequently asked questions

What is CVE-2020-11979?: As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection, effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.
How severe is CVE-2020-11979?: CVE-2020-11979 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-11979 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11979?: CVE-2020-11979 primarily affects Apache Ant. In total, 70 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-11979?: 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-2020-11979 published?: CVE-2020-11979 was published on 2020-10-01 and last updated on 2026-06-17.

References

Affected products (70)

cpe:2.3:a:apache:ant:1.10.8:*:*:*:*:*:*:*
cpe:2.3:a:gradle:gradle:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:api_gateway:11.1.2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_platform:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_platform:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_platform:2.6.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_platform:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_platform:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_platform:2.8.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_treasury_management:14.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.1:*:*:*:*:*:*:*
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:3.2.0.0:*:*:*:*:*:*:*
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:financial_services_analytical_applications_infrastructure:8.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:8.1.1:*:*:*:*:*:*:*
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: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:primavera_unifier:20.12:*:*:*:*:*:*:*
cpe:2.3:a:oracle:real-time_decision_server:3.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:real-time_decision_server:11.1.1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_advanced_inventory_planning:14.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_assortment_planning:16.0.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_category_management_planning_\&_optimization:16.0.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_eftlink:19.0.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_eftlink:20.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_financial_integration:14.1.3:*:*:*:*:*:*:*

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