VulnerabilityModified
CVE-2020-9488
Improper validation of certificate with host mismatch in Apache Log4j SMTP appender.
LOW 3.7EPSS 8.22%
Does this matter?
Lower severity and a low EPSS score (8.22%). Track it; it rarely justifies an emergency change on its own.
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
- CVSS 3.1
- 3.7 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 8.22% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- apache/log4j · oracle/communications application session controller · oracle/communications billing and revenue management · oracle/communications eagle ftp table base retrieval · oracle/communications offline mediation controller · oracle/communications services gatekeeper · oracle/communications unified inventory management · oracle/data integrator · oracle/enterprise manager for peoplesoft · oracle/financial services analytical applications infrastructure · oracle/financial services institutional performance analytics · oracle/financial services market risk measurement and management · oracle/financial services price creation and discovery · oracle/financial services retail customer analytics · oracle/flexcube core banking · oracle/flexcube private banking · oracle/health sciences information manager · oracle/insurance insbridge rating and underwriting · oracle/insurance policy administration j2ee · oracle/insurance rules palette · +26 more
- Source
- security@apache.org
EPSS 8.2% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://issues.apache.org/jira/browse/LOG4J2-2819Issue Tracking, Mitigation, Patch, Vendor Advisory
- https://lists.apache.org/thread.html/r0a2699f724156a558afd1abb6c044fb9132caa66dce861b82699722a%40%3Cjira.kafka.apache.org%3E
- https://lists.apache.org/thread.html/r0df3d7a5acb98c57e64ab9266aa21eeee1d9b399addb96f9cf1cbe05%40%3Cdev.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r1fc73f0e16ec2fa249d3ad39a5194afb9cc5afb4c023dc0bab5a5881%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r22a56beb76dd8cf18e24fda9072f1e05990f49d6439662d3782a392f%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r2721aba31a8562639c4b937150897e24f78f747cdbda8641c0f659fe%40%3Cusers.kafka.apache.org%3E
- https://lists.apache.org/thread.html/r2f209d271349bafd91537a558a279c08ebcff8fa3e547357d58833e6%40%3Cdev.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r33864a0fc171c1c4bf680645ebb6d4f8057899ab294a43e1e4fe9d04%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r393943de452406f0f6f4b3def9f8d3c071f96323c1f6ed1a098f7fe4%40%3Ctorque-dev.db.apache.org%3E
- https://lists.apache.org/thread.html/r3d1d00441c55144a4013adda74b051ae7864128ebcfb6ee9721a2eb3%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r4285398e5585a0456d3d9db021a4fce6e6fcf3ec027dfa13a450ec98%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r45916179811a32cbaa500f972de9098e6ee80ee81c7f134fce83e03a%40%3Cissues.flink.apache.org%3E
- https://lists.apache.org/thread.html/r48bcd06049c1779ef709564544c3d8a32ae6ee5c3b7281a606ac4463%40%3Cjira.kafka.apache.org%3E
- https://lists.apache.org/thread.html/r48efc7cb5aeb4e1f67aaa06fb4b5479a5635d12f07d0b93fc2d08809%40%3Ccommits.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r4d5dc9f3520071338d9ebc26f9f158a43ae28a91923d176b550a807b%40%3Cdev.hive.apache.org%3E
- https://lists.apache.org/thread.html/r4db540cafc5d7232c62e076051ef661d37d345015b2e59b3f81a932f%40%3Cdev.hive.apache.org%3E
- https://lists.apache.org/thread.html/r4ed1f49616a8603832d378cb9d13e7a8b9b27972bb46d946ccd8491f%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r5a68258e5ab12532dc179edae3d6e87037fa3b50ab9d63a90c432507%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r65578f3761a89bc164e8964acd5d913b9f8fd997967b195a89a97ca3%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r7641ee788e1eb1be4bb206a7d15f8a64ec6ef23e5ec6132d5a567695%40%3Cnotifications.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r7e5c10534ed06bf805473ac85e8412fe3908a8fa4cabf5027bf11220%40%3Cdev.kafka.apache.org%3E
- https://lists.apache.org/thread.html/r7e739f2961753af95e2a3a637828fb88bfca68e5d6b0221d483a9ee5%40%3Cnotifications.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r8c001b9a95c0bbec06f4457721edd94935a55932e64b82cc5582b846%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r8e96c340004b7898cad3204ea51280ef6e4b553a684e1452bf1b18b1%40%3Cjira.kafka.apache.org%3E
- https://lists.apache.org/thread.html/r9776e71e3c67c5d13a91c1eba0dc025b48b802eb7561cc6956d6961c%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r9a79175c393d14d760a0ae3731b4a873230a16ef321aa9ca48a810cd%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/ra051e07a0eea4943fa104247e69596f094951f51512d42c924e86c75%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/ra632b329b2ae2324fabbad5da204c4ec2e171ff60348ec4ba698fd40%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/rbc45eb0f53fd6242af3e666c2189464f848a851d408289840cecc6e3%40%3Ccommits.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/rbc7642b9800249553f13457e46b813bea1aec99d2bc9106510e00ff3%40%3Ctorque-dev.db.apache.org%3E
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.