CVE-2020-9497

lowpriority · track · 18EPSS 0.008 · 56 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.79% (56th) EPSS

CVSS 1.2 · low

Is it mine?

11 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · mb_connect_line_psirt

EPSS · scored 2026-10-27

Apache Guacamole 1.1.0 and older do not properly validate datareceived from RDP servers via static virtual channels. If a userconnects to a malicious or compromised RDP server, specially-craftedPDUs could result in disclosure of information within the memory ofthe guacd process handling the connection.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedmbCONNECT24mb_connect_line_psirt
Update to 3.9R0.5

cvss

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

4.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.2–4.4

v2.01.2lowAV:L/AC:H/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 1.9 · impact 2.9

v3.14.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 0.8 · impact 3.6

v3.14.1mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.14.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:Nsecondary · MB connect line PSIRT

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

affected products (11)

Products and version ranges known to be affected.

n/a Apache Guacamole≤ Apache Guacamole 1.1.0 and olderenisa_euvdEU
MB connect line mbCONNECT24≤ 2.8.0mb_connect_line_psirtDE
MB connect line mbCONNECT24all versionsfixedmb_connect_line_psirtDE
MB connect line mymbCONNECT24≤ 2.8.0mb_connect_line_psirtDE
MB connect line mymbCONNECT24all versionsfixedmb_connect_line_psirtDE
apache guacamole≤ 1.1.0nvdUScpe:2.3:a:apache:guacamole:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 32nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 33nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
Bitnami guacamole< 1.1.0osvUSpkg:bitnami/guacamole
Bitnami guacamole-server< 1.1.0osvUSpkg:bitnami/guacamole-server

advisories (3)

Vendor and ecosystem advisories describing this.

VDE-2021-031MB connect line: Apache Guacamole related vulnerabilities in mbCONNECT242021-07-22csaf · mb_connect_line_psirtDE
Two vulnerabilities in mbCONNECT24 and mymbCONNECT24 can lead to information disclosure and arbitrary code execution. Please consult the CVE entries for details.
BIT-guacamole-2020-94972024-03-06vendor · osvUS
Apache Guacamole 1.1.0 and older do not properly validate datareceived from RDP servers via static virtual channels. If a userconnects to a malicious or compromised RDP server, specially-craftedPDUs could result in disclosure of information within the memory ofthe guacd process handling the connection.
BIT-guacamole-server-2020-94972024-03-06vendor · osvUS
Apache Guacamole 1.1.0 and older do not properly validate datareceived from RDP servers via static virtual channels. If a userconnects to a malicious or compromised RDP server, specially-craftedPDUs could result in disclosure of information within the memory ofthe guacd process handling the connection.

also known as (5)

Other names and identifiers for this entity.

CNNVD-202007-135 cnnvd
EUVD-2020-30303 enisa_euvd
GHSA-9q4f-696q-fjxm enisa_euvd
BIT-guacamole-2020-9497osv
BIT-guacamole-server-2020-9497osv

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv mb_connect_line_psirt nvd NVD CVE.org MITRE

published 2020-07-02modified 2026-06-17

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+25171 more

references (37)

External citations — patches, advisories, analysis.

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