CVE Tools
Sign in

CVE-2021-3629

A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially cause overhead or a denial of service in the server. The highest threat ...

Published: May 24, 2022Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-400
5.9MEDIUM
NVD MITRE
EPSS Score
1.3%
Top 33.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Undertow Uncontrolled Resource Consumption

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-400

Affected Products

redhat
commercial·USaka red hat
integrationOn-prem
Operating Systems / linux-distro
jboss enterprise application platformOn-prem
Operating Systems / linux-distro
single sign-onOn-prem
Operating Systems / linux-distro
undertowOn-prem
Operating Systems / linux-distro
wildfly coreOn-prem
Operating Systems / linux-distro
netapp
commercial·US
active iq unified manager
Hardware Firmware
oncommand insight
Hardware Firmware
oncommand workflow automation
Hardware Firmware
Maven
package-ecosystem
io.undertow:undertow-core
OSS Libraries
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-3629?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2021-3629
nvd.nist.gov
https://bugzilla.redhat.com/show_bug.cgi?id=1977362
bugzilla.redhat.com
https://github.com/undertow-io/undertow
github.com
and 2 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-3629 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows