CVE-2021-3859: netapp cloud_secure_agent
Vulnerability summary
CVE-2021-3859 is a high (CVSS 7.5) vulnerability in netapp cloud_secure_agent. EPSS estimates a 1.74% chance of exploitation in the next 30 days, higher than 77.7% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6Timeline
- 26-08-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw allows an attacker to carry out denial of service attacks.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · MavenEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.74%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
Increase +0.09 pp
From 1.64% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-214Invocation of Process Using Visible Sensitive InformationA process is invoked with sensitive command-line arguments, environment variables, or other elements that can be seen by other processes on the operating system.
- CWE-668Exposure of Resource to Wrong SphereThe product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat4 products
- jboss_enterprise_application_platform7.3 | 7.4
- single_sign-on7.4.10 | 7.5.1
- undertow< 2.2.15
- eap7-undertow< 0:2.0.41-2.SP2_redhat_00001.1.el6eap | < 0:2.0.41-2.SP2_redhat_00001.1.el7eap | < 0:2.0.41-2.SP2_redhat_00001.1.el8eap
Netapp3 products
Debian1 product
- undertow< 2.2.16-1
Io.undertow1 product
- undertow-core< 2.2.15
Ubuntu1 product
- undertowAll versions (No fix recorded)
5 vendors · 10 products
References
19 links- github.com/undertow-io/undertow/commit/e43f0ada3f4da6e8579e0020cec3cb1a81e487c2WEBPatchThird Party Advisory
- security.netapp.com/advisory/ntap-20221201-0004/Third Party Advisory
