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Exploited (KEV)47In CISA KEV
CVSS critical776CVSS 9.0–10.0
CVSS high1543CVSS 7.0–8.9

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13 records in Guacamole · all components

TI-2021-19751 CVE-2021-43999 · GHSA-v83c-8hcj-4545

Improper validation of SAML responses

Priority MEDIUM 42

Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.01843 Published 2022-01-11 No fix listed CWE-287
TI-2017-02374 CVE-2017-3158 · GHSA-3vv3-585q-wv6x

Race condition in Apache Guacamole

Priority LOW 38

A race condition in Guacamole's terminal emulator in versions 0.9.5 through 0.9.10-incubating could allow writes of blocks of printed data to overlap.

CVSS 3.0HIGH 8.1 Network No auth No interaction EPSS 0.01221 Published 2018-01-18 Fixed in 0.9.11-incubating CWE-362
Priority LOW 35

The terminal emulator of Apache Guacamole 1.5.5 and older does not properly validate console codes received from servers via text-based protocols like SSH.

CVSS 3.1HIGH 7.5 Network Low privileges No interaction EPSS 0.0053 Published 2025-07-02 No fix listed CWE-129
Priority LOW 35

Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the ha…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01007 Published 2023-06-07 No fix listed CWE-131
TI-2020-07607 CVE-2020-9498 · GHSA-wrfm-qjwf-qpwj

Out-of-bounds write in Apache Guacamole

Priority LOW 31

Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels.

CVSS 3.1MEDIUM 6.7 Local Low privileges User interaction EPSS 0.0074 Published 2020-07-02 No fix listed CWE-787
Priority LOW 29

Cross-site scripting (XSS) vulnerability in the file browser in Guacamole 0.9.8 and 0.9.9, when file transfer is enabled to a location shared by multiple users, allows remote authenticated users to inject arbitrary web s…

CVSS 3.0MEDIUM 5.4 Network Low privileges User interaction EPSS 0.02216 Published 2017-02-02 No fix listed CWE-79
Priority LOW 23

Apache Guacamole 1.2.0 and earlier do not consistently restrict access to connection history based on user visibility.

CVSS 3.1MEDIUM 4.3 Network Low privileges No interaction EPSS 0.0126 Published 2021-01-19 No fix listed CWE-276
Priority LOW 22

Apache Guacamole 1.1.0 and older do not properly validate datareceived from RDP servers via static virtual channels.

CVSS 3.1MEDIUM 4.4 Local Low privileges User interaction EPSS 0.00792 Published 2020-07-02 No fix listed CWE-20
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