CVE-2021-3690
HIGH
7.5
CVSS Score
Published: August 23, 2022 at 03:50 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
8 products affected across 1 vendorJBoss Enterprise Application PlatformSingle Sign onFuse
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versions
All versions
All versions
95%
All versions
v < 2.0.402.1.0 ≤ v < 2.2.10
Affected range stops below 2.0.40, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.10, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 2.2.10.Final (unaffected)
Enterprise Linux· Red Hatrpmdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2021-3690x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1991299x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877x_refsource_MISCExploitIssue TrackingMitigationVendor Advisory
Source: [email protected]
https://issues.redhat.com/browse/UNDERTOW-1935CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-400CWE-401
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