CVE-2021-44832

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

97.91% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.9% of scored records. A rank, not a probability.

NVD base score

6.6 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-12-28 19:35Z4 YR AGO

Last updated

2026-05-29 18:53Z3 MO AGO

Reserved

2021-12-11

Assigning CNA

apache

Record state

PUBLISHED

Severity

Medium (CVSS 6.6)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class

Data version

5.2

Document digest

954ff1c597729499388efe9973e3cef447c0fca282cc0d865676cf0164170b23

• tools.cisco.com20211210 Vulnerabilities in Apache Log4j Library Affecting Cisco Products: December 2021https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbdvendor-advisoryx_refsource_CISCO
• lists.apache.orghttps://lists.apache.org/thread/s1o5vlo78ypqxnzn6p8zf6t9shtq5143x_refsource_MISC
• issues.apache.orghttps://issues.apache.org/jira/browse/LOG4J2-3293x_refsource_MISC
• www.openwall.com[oss-security] 20211228 CVE-2021-44832: Apache Log4j2 vulnerable to RCE via JDBC Appender when attacker controls configurationhttp://www.openwall.com/lists/oss-security/2021/12/28/1mailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20211229 [SECURITY] [DLA 2870-1] apache-log4j2 security updatehttps://lists.debian.org/debian-lts-announce/2021/12/msg00036.htmlmailing-listx_refsource_MLIST
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-784507.pdfx_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2021-c6f471ce0fhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EVV25FXL4FU5X6X5BSL7RLQ7T6F65MRA/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-1bd9151babhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T57MPJUW3MA6QGWZRTMCHHMMPQNVKGFC/vendor-advisoryx_refsource_FEDORA
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.htmlx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20220104-0001/x_refsource_CONFIRM
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC