CVE-2021-28827

mediumpriority · track · 38EPSS 0.011 · 66 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.10% (66th) EPSS
CVSS 6.8 · medium
Is it mine?
21 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

The Administration GUI component of TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition, TIBCO Administrator - Enterprise Edition, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric, TIBCO Administrator - Enterprise Edition for z/Linux, TIBCO Administrator - Enterprise Edition for z/Linux, TIBCO Runtime Agent, TIBCO Runtime Agent, TIBCO Runtime Agent for z/Linux, and TIBCO Runtime Agent for z/Linux contains an easily exploitable vulnerability that allows an unauthenticated attacker to social engineer a legitimate user with network access to execute a Stored XSS attack targeting the affected system. A successful attack using this vulnerability requires human interaction from a person other than the attacker. Affected releases are TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition: versions 5.10.2 and below, TIBCO Administrator - Enterprise Edition: versions 5.11.0 and 5.11.1, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric: versions 5.10.2 and below, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric: versions 5.11.0 and 5.11.1, TIBCO Administrator - Enterprise Edition for z/Linux: versions 5.10.2 and below, TIBCO Administrator - Enterprise Edition for z/Linux: versions 5.11.0 and 5.11.1, TIBCO Runtime Agent: versions 5.10.2 and below, TIBCO Runtime Agent: versions 5.11.0 and 5.11.1, TIBCO Runtime Agent for z/Linux: versions 5.10.2 and below, and TIBCO Runtime Agent for z/Linux: versions 5.11.0 and 5.11.1.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.6
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.8–9.6

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4
v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 6
v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Lsecondary · ENISA EU
v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Lsecondary · security@tibco.com USexploitability 2.8 · impact 6
v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

03

affected products (21)

Products and version ranges known to be affected.

showing 20 of 21
04

also known as (3)

Other names and identifiers for this entity.

05

sources

Which sources assert this record, and when.

published 2021-04-20modified 2026-06-17
07

references (7)

External citations — patches, advisories, analysis.

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