CVE-2021-24122

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited 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

22.85% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 97.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-08.

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

2021-01-14 14:45Z5 YR AGO

Last updated

2026-10-08 21:03Z21 DAYS AGO

Reserved

2021-01-14

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
• CWE-706Use of Incorrectly-Resolved Name or ReferenceClass

Data version

5.2

Document digest

811aff7270cc27f010f535c191c1fcf2aeba47735c2fa5e493a2507f20987d83

• lists.apache.orghttps://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52%40%3Cannounce.tomcat.apache.org%3Ex_refsource_MISC
• lists.apache.org[tomcat-dev] 20210114 svn commit: r1885488 - in /tomcat/site/trunk: docs/security-10.html docs/security-7.html docs/security-8.html docs/security-9.html xdocs/security-10.xml xdocs/security-7.xml xdocs/security-8.xml xdocs/security-9.xmlhttps://lists.apache.org/thread.html/rca833c6d42b7b9ce1563488c0929f29fcc95947d86e5e740258c8937%40%3Cdev.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomee-dev] 20210114 Re: Releases?https://lists.apache.org/thread.html/r776c64337495bf28b7d5597268114a888e3fad6045c40a0da0c66d4d%40%3Cdev.tomee.apache.org%3Emailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20210114 [SECURITY] CVE-2021-24122 Apache Tomcat Information Disclosurehttp://www.openwall.com/lists/oss-security/2021/01/14/1mailing-listx_refsource_MLIST
• lists.apache.org[announce] 20210114 [SECURITY] CVE-2021-24122 Apache Tomcat Information Disclosurehttps://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52%40%3Cannounce.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomcat-dev] 20210114 [SECURITY] CVE-2021-24122 Apache Tomcat Information Disclosurehttps://lists.apache.org/thread.html/r7e0bb9ea415724550e2b325e143b23e269579e54d66fcd7754bd0c20%40%3Cdev.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomcat-users] 20210114 [SECURITY] CVE-2021-24122 Apache Tomcat Information Disclosurehttps://lists.apache.org/thread.html/rb32a73b7cb919d4f44a2596b6b951274c0004fc8b0e393d6829a45f9%40%3Cusers.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomee-dev] 20210115 CVE-2021-24122 NTFS Information Disclosure Bughttps://lists.apache.org/thread.html/r7382e1e35b9bc7c8f320b90ad77e74c13172d08034e20c18000fe710%40%3Cdev.tomee.apache.org%3Emailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20210316 [SECURITY] [DLA 2596-1] tomcat8 security updatehttps://lists.debian.org/debian-lts-announce/2021/03/msg00018.htmlmailing-listx_refsource_MLIST
• www.oracle.comhttps://www.oracle.com//security-alerts/cpujul2021.htmlx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210212-0008/x_refsource_CONFIRM