CVE-2020-9488

Apache Apache Log4j

LOW 3.7

At a glance

Source: NVD
EPSS: EPSS 8.22 % · percentile 95 (2026-10-28)
State: PUBLISHED
Published: 2020-04-27 15:36 UTC
Updated: 2026-05-29 16:07 UTC
Assigner: apache
NVD status: Modified

Description

Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1

Weaknesses (CWE)

CWE-295 — Improper Certificate Validation

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	LOW 3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP
CVSS 3.1	LOW 3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N	NVD · nvd@nist.gov (Primary)
CVSS 3.1	LOW 3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0	MEDIUM 4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N	NVD · nvd@nist.gov (Primary)

Advisories

GHSA-vwqq-5vrc-xw9h — Improper validation of certificate with host mismatch in Apache Log4j SMTP appender

European references

ENISA EUVD · EUVD-2020-0518
GCVE · GCVE-0-2020-9488

CERT-FR advisories

CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2024-AVI-0419 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2023-AVI-0910 — Multiples vulnérabilités dans IBM QRadar · cert.ssi.gouv.fr
CERTFR-2022-AVI-386 — Multiples vulnérabilités dans IBM QRadar SIEM · cert.ssi.gouv.fr
CERTFR-2022-AVI-367 — Multiples vulnérabilités dans Oracle Systems · cert.ssi.gouv.fr
CERTFR-2021-AVI-951 — Multiples vulnérabilités dans le noyau Linux de RedHat · cert.ssi.gouv.fr
CERTFR-2021-AVI-045 — Multiples vulnérabilités dans Oracle Systems · cert.ssi.gouv.fr
CERTFR-2020-AVI-667 — Multiples vulnérabilités dans Oracle Weblogic · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* ≥ 2.0 < 2.3.2
cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* ≥ 2.4 < 2.12.3
cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* ≥ 2.13.0 < 2.13.2
cpe:2.3:a:oracle:communications_application_session_controller:3.9m0p1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_billing_and_revenue_management:7.5.0.23.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_eagle_ftp_table_base_retrieval:4.5:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_services_gatekeeper:7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_unified_inventory_management:7.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.0:*:*:*:*:*:*:*
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:enterprise_manager_for_peoplesoft:13.4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:*:*:*:*:*:*:*:* ≥ 8.0.6.0.0 ≤ 8.1.0.0.0
cpe:2.3:a:oracle:financial_services_institutional_performance_analytics:8.0.6:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_institutional_performance_analytics:8.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_institutional_performance_analytics:8.7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_market_risk_measurement_and_management:8.0.6:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_market_risk_measurement_and_management:8.0.8:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_market_risk_measurement_and_management:8.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_price_creation_and_discovery:8.0.6:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_price_creation_and_discovery:8.0.7:*:*:*:*:*:*:*
cpe:2.3:a:oracle:financial_services_retail_customer_analytics:8.0.6:*:*:*:*:*:*:*
cpe:2.3:a:oracle:flexcube_core_banking:*:*:*:*:*:*:*:* ≥ 11.5.0 ≤ 11.7.0
cpe:2.3:a:oracle:flexcube_core_banking:5.2.0:*:*:*:*:*:*:*
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:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_insbridge_rating_and_underwriting:*:*:*:*:*:*:*:* ≥ 5.0.0.0 ≤ 5.6.0.0
cpe:2.3:a:oracle:insurance_insbridge_rating_and_underwriting:5.6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_policy_administration_j2ee:10.2.0.37:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_policy_administration_j2ee:10.2.4.12:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_policy_administration_j2ee:11.0.2.25:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_policy_administration_j2ee:11.1.0.15:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_policy_administration_j2ee:11.2.0.26:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_rules_palette:10.2.0.37:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_rules_palette:10.2.4.12:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_rules_palette:11.0.2.25:*:*:*:*:*:*:*
cpe:2.3:a:oracle:insurance_rules_palette:11.1.0.15:*:*:*:*:*:*:*
+61 more

Affected products

Product	Versions
Apache · Apache Log4j	affected log4j-core 2.13.0 ; affected log4j-core < 2.12.3

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD