CVE-2020-13934

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

64.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Important. 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

2020-07-14 14:59Z6 YR AGO

Last updated

2026-10-08 21:13Z20 DAYS AGO

Reserved

2020-06-08

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-401Missing Release of Memory after Effective LifetimeVariant
• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

c1592a402c36aa92405681349c35956c734b5e9eb223c0507149914d4b937004

• lists.apache.orghttps://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3Ex_refsource_MISC
• www.debian.orgDSA-4727https://www.debian.org/security/2020/dsa-4727vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20200722 [SECURITY] [DLA 2286-1] tomcat8 security updatehttps://lists.debian.org/debian-lts-announce/2020/07/msg00017.htmlmailing-listx_refsource_MLIST
• lists.opensuse.orgopenSUSE-SU-2020:1102http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2020:1111http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.htmlvendor-advisoryx_refsource_SUSE
• lists.apache.org[tomcat-dev] 20200818 [Bug 64671] HTTP/2 Stream.receivedData method throwing continuous NullPointerException in the logshttps://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3Emailing-listx_refsource_MLIST
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2020.htmlx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20200724-0003/x_refsource_CONFIRM
• usn.ubuntu.comUSN-4596-1https://usn.ubuntu.com/4596-1/vendor-advisoryx_refsource_UBUNTU
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2021.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuApr2021.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com//security-alerts/cpujul2021.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.htmlx_refsource_MISC