CVE-2021-43053Network attack vector

Unauthenticated cluster-secret disclosure

Published Jan 11, 2022 · Updated Sep 16, 2024

Information disclosure in TIBCO FTL 6.7.2 and earlier allows remote attackers to obtain another application's cluster secret. The flaw resides in Realm Server, but TIBCO has not disclosed which request path or validation failure releases a cluster secret to the wrong client. Network access without authentication is sufficient, and successful exploitation grants full access to communication on the victim application's existing eFTL channel.

CVSS severity8.5
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in TIBCO FTL 6.7.2 and earlier allows remote attackers to obtain another application's cluster secret. The flaw resides in Realm Server, but TIBCO has not disclosed which request path or validation failure releases a cluster secret to the wrong client. Network access without authentication is sufficient, and successful exploitation grants full access to communication on the victim application's existing eFTL channel.

The record

CVE
CVE-2021-43053
Published
Jan 11, 2022
Updated
Sep 16, 2024
Vendor
TIBCO Software Inc.
Product
TIBCO FTL - Community Edition
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=6.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TIBCO Software Inc. · TIBCO FTL - Community Editionversion=unspecified <=6.7.2
TIBCO Software Inc. · TIBCO FTL - Developer Editionversion=unspecified <=6.7.2
TIBCO Software Inc. · TIBCO FTL - Enterprise Editionversion=unspecified <=6.7.2

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.5TIBCO Software Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/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

No sourced classifications are available.

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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