CVE-2020-9498

mediumpriority · track · 27EPSS 0.007 · 54 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.74% (54th) EPSS
CVSS 6.2 · medium
Is it mine?
15 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.

01

remediations

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

A vendor fix is available.

02

cvss

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

6.7
010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.2mediumAV:L/AC:H/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 1.9 · impact 10
v3.16.7mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.8 · impact 5.9
v3.16.7mediumAV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.16.1mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.16.7mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:Hsecondary · MB connect line PSIRT
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119USCWE-787US
04

affected products (15)

Products and version ranges known to be affected.

05

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-2020-94982024-03-06vendor · osvUS

    Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.

  • BIT-guacamole-server-2020-94982024-03-06vendor · osvUS

    Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvmb_connect_line_psirtnvdNVDCVE.orgMITRE
published 2020-07-02modified 2026-06-17
09

references (32)

External citations — patches, advisories, analysis.

scry

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