CVE-2021-35940

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 67.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-08-23 10:00Z5 YR AGO

Last updated

2024-08-04 00:40Z2 YR AGO

Reserved

2021-06-29

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

ae726db6ab31fbb228aa581a405199f6c19e2b031a2c16e792279561669056e6

• svn.apache.orghttp://svn.apache.org/viewvc?view=revision&revision=1891198x_refsource_MISC
• mail-archives.apache.orghttp://mail-archives.apache.org/mod_mbox/www-announce/201710.mbox/%3CCACsi251B8UaLvM-rrH9fv57-zWi0zhyF3275_jPg1a9VEVVoxw%40mail.gmail.com%3Ex_refsource_MISC
• dist.apache.orghttps://dist.apache.org/repos/dist/release/apr/patches/apr-1.7.0-CVE-2021-35940.patchx_refsource_MISC
• lists.apache.orghttps://lists.apache.org/thread.html/ra2868b53339a6af65577146ad87016368c138388b09bff9d2860f50e%40%3Cdev.apr.apache.org%3Ex_refsource_MISC
• www.openwall.com[oss-security] 20210823 CVE-2021-35940: Apache Portable Runtime (APR): Regression of CVE-2017-12613http://www.openwall.com/lists/oss-security/2021/08/23/1mailing-listx_refsource_MLIST
• lists.apache.org[announce] 20210823 CVE-2021-35940: Apache Portable Runtime (APR): Regression of CVE-2017-12613https://lists.apache.org/thread.html/rb1f3c85f50fbd924a0051675118d1609e57957a02ece7facb723155b%40%3Cannounce.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[apr-dev] 20210831 APR 1.7.1 release?https://lists.apache.org/thread.html/r7bb4a6ed88fc48152174e664aae30ea9a8b058eb5b44cf08cb9beb4b%40%3Cdev.apr.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[httpd-dev] 20210831 APR 1.7.1 release?https://lists.apache.org/thread.html/r7bb4a6ed88fc48152174e664aae30ea9a8b058eb5b44cf08cb9beb4b%40%3Cdev.httpd.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[apr-dev] 20210831 Re: APR 1.7.1 release?https://lists.apache.org/thread.html/r72a069753b9363c29732e59ad8f0d22a633fb6a699980407511ac961%40%3Cdev.apr.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[apr-dev] 20210901 Re: APR 1.7.1 release?https://lists.apache.org/thread.html/r317c398ee5736e627f7887b06607e5c58b45a696d352ba8c14615f55%40%3Cdev.apr.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[apr-dev] 20210916 Re: CVE-2021-35940: Apache Portable Runtime (APR): Regression of CVE-2017-12613https://lists.apache.org/thread.html/ra38094406cc38a05218ebd1158187feda021b0c3a1df400bbf296af8%40%3Cdev.apr.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomcat-dev] 20210922 [jira] [Created] (MTOMCAT-327) Tomcat 9.0.50 and it has apr-1.7.0 dependency, with Address CVE-2021-35940https://lists.apache.org/thread.html/r72479f4dcffaa8a4732d5a0e87fecc4bace4932e28fc26f7d400e2b3%40%3Cdev.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomcat-dev] 20210922 [jira] [Resolved] (MTOMCAT-327) Tomcat 9.0.50 and it has apr-1.7.0 dependency, with Address CVE-2021-35940https://lists.apache.org/thread.html/r54c755c74b9e3846cfd84039b1967d37d2870750a02d7c603983f6ed%40%3Cdev.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomcat-dev] 20210922 [jira] [Commented] (MTOMCAT-327) Tomcat 9.0.50 and it has apr-1.7.0 dependency, with Address CVE-2021-35940https://lists.apache.org/thread.html/rafe54755850e93de287c36540972457b2dd86332106aa7817c7c27fb%40%3Cdev.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[tomcat-dev] 20210922 [jira] [Reopened] (MTOMCAT-327) Tomcat 9.0.50 and it has apr-1.7.0 dependency, with Address CVE-2021-35940https://lists.apache.org/thread.html/r1c788464a25fbc046a72aff451bc8186386315d92a2dd0349903fa4f%40%3Cdev.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC