CVE-2021-41394Network attack vector

Build artifact alteration

Published Sep 18, 2021 · Updated Aug 4, 2024

Supply-chain integrity failure in Teleport allows attackers to alter distributed artifacts through its vulnerable build infrastructure. Teleport has not published the flaw’s technical locus or the operation that permits build-artifact modification. The required access and preconditions remain undisclosed; the bounded consequence is artifact modification, and Teleport reported no evidence of exploitation.

CVSS severity5.3
Medium
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Supply-chain integrity failure in Teleport allows attackers to alter distributed artifacts through its vulnerable build infrastructure. Teleport has not published the flaw’s technical locus or the operation that permits build-artifact modification. The required access and preconditions remain undisclosed; the bounded consequence is artifact modification, and Teleport reported no evidence of exploitation.

The record

CVE
CVE-2021-41394
Published
Sep 18, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1195.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1195.002Compromise Software Supply Chain

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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