Staging Environment: Content and features may be unstable or change without notice.
Advisory details: vulnrichment / CVE-2020-9488
Advisory ID vulnrichment/CVE-2020-9488
Aliases
Summary 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
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 3.7
ssvc Track
Reference id Reference type URL
https://issues.apache.org/jira/browse/LOG4J2-2819
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
https://lists.apache.org/thread.html/rc2dbc4633a6eea1fcbce6831876cfa17b73759a98c65326d1896cb1a%40%3Ctorque-dev.db.apache.org%3E
https://lists.apache.org/thread.html/rc6b81c013618d1de1b5d6b8c1088aaf87b4bacc10c2371f15a566701%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/rd55f65c6822ff235eda435d31488cfbb9aa7055cdf47481ebee777cc%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rd5d58088812cf8e677d99b07f73c654014c524c94e7fedbdee047604%40%3Ctorque-dev.db.apache.org%3E
https://lists.apache.org/thread.html/rd8e87c4d69df335d0ba7d815b63be8bd8a6352f429765c52eb07ddac%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/re024d86dffa72ad800f2848d0c77ed93f0b78ee808350b477a6ed987%40%3Cgitbox.hive.apache.org%3E
https://lists.apache.org/thread.html/rec34b1cccf907898e7cb36051ffac3ccf1ea89d0b261a2a3b3fb267f%40%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rf1c2a81a08034c688b8f15cf58a4cfab322d00002ca46d20133bee20%40%3Cdev.kafka.apache.org%3E
https://lists.debian.org/debian-lts-announce/2021/12/msg00017.html
https://security.netapp.com/advisory/ntap-20200504-0003/
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com/security-alerts/cpuoct2020.html
cpuApr2021.html Other https://www.oracle.com/security-alerts/cpuApr2021.html
cpuapr2022.html Other https://www.oracle.com/security-alerts/cpuapr2022.html
cpujul2020.html Other https://www.oracle.com/security-alerts/cpujul2020.html
cpuoct2021.html Other https://www.oracle.com/security-alerts/cpuoct2021.html
dsa-5020 Advisory https://www.debian.org/security/2021/dsa-5020
rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E Mailing List https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at None
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none


Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-29T16:07:49Z/ Found at None

Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-29T16:07:49Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2020/9xxx/CVE-2020-9488.json

Source Advisory: vulnrichment/CVE-2020-9488

View SSVC decision tree
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]