vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2020-13935

HIGH
7.5
CVSS Score
Published: July 14, 2020 at 03:00 PM UTC
Updated: October 8, 2026 at 09:17 PM UTC
18 products affected across 7 vendorsTomcatDebian LinuxUbuntu Linux

Using Apache Tomcat by N/A?

Get instant alerts when new vulnerabilities affect Apache Tomcat - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.5
Exploit prediction
EPSS 87%
SSVC
No known exploit

Description

The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tomcat· Apache
99%
7.0.27 ≤ v ≤ 7.0.1048.5.0 ≤ v ≤ 8.5.569.0.1 ≤ v ≤ 9.0.36*10.0.010.0.0 milestone110.0.0 milestone210.0.0 milestone310.0.0 milestone410.0.0 milestone510.0.0 milestone69.0.09.0.0 milestone19.0.0 milestone109.0.0 milestone119.0.0 milestone129.0.0 milestone139.0.0 milestone149.0.0 milestone159.0.0 milestone169.0.0 milestone179.0.0 milestone189.0.0 milestone199.0.0 milestone29.0.0 milestone209.0.0 milestone219.0.0 milestone229.0.0 milestone239.0.0 milestone249.0.0 milestone259.0.0 milestone269.0.0 milestone279.0.0 milestone39.0.0 milestone49.0.0 milestone59.0.0 milestone69.0.0 milestone79.0.0 milestone89.0.0 milestone9
Ubuntu Linux· Canonicalrubygems
95%
16.0420.04
Debian Linux· Debiandrupal
95%
10.09.0
Epolicy Orchestrator· McAfee
95%
5.10.05.10.0 update_15.10.0 update_25.10.0 update_35.10.0 update_45.10.0 update_55.10.0 update_65.10.0 update_75.10.0 update_85.9.05.9.1
Oncommand System Manager· NetAppdrupal
95%
3.0.0 ≤ v ≤ 3.1.3*
Leap· openSUSEdrupal
95%
15.115.2
Agile Engineering Data Management· Oracle
95%
6.2.1.0
Agile Product Lifecycle Management· Oracledrupal
95%
9.3.39.3.59.3.6
Blockchain Platform· Oracledrupal
95%
v < 21.1.2*
Affected range stops below 21.1.2, so it looks safe — our inference, not a vendor statement
Commerce Guided Search· Oracledrupal
95%
11.3.2

References (17)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://kc.mcafee.com/corporate/index?page=content&id=SB10332
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r4e5d3c09f4dd2923191e972408b40fb8b42dbff0bc7904d44b651e50%40%3Cusers.tomcat.apache.org%3E
x_refsource_MISCMailing ListRelease NotesVendor Advisory
Source: [email protected]
https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%40%3Cannounce.tomcat.apache.org%3E
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20200724-0003/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4448-1/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card