Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels
Published Jul 2, 2020
6.7
MEDIUMCVSS 3.1
EPSS 0.74%
Description
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.
Affected products
- Vendor n/a Product Apache Guacamole Defaultn/a
- Version Apache Guacamole 1.1.0 and olderStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Apache Guacamole | n/a |
|
Configuration 2
- 32
- 33
Configuration 3
- 9.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.74% (0.00740) | 53.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.74% (0.00740) | 49.61th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.11% (0.00107) | 26.40th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00051) | 22.05th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.05% (0.00051) | 20.12th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00051) | 18.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.54% (0.02537) | 81.93th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.54% (0.02537) | 80.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.92% (0.07919) | 81.59th | v2 (v2022.01.01) |
| Feb 3, 2022 | 18.88% (0.18878) | 93.67th | v1 |
| Jan 6, 2022 | 18.88% (0.18878) | 93.60th | v1 |
| Sep 1, 2021 | 4.93% (0.04931) | 87.50th | v1 |
| Apr 14, 2021 | 4.93% (0.04931) | 0.00th | v1 |
References (9)
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44525 x_refsource_CONFIRMThird Party Advisory
- https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r26fb170edebff842c74aacdb1333c1338f0e19e5ec7854d72e4680fc%40%3Cannounce.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rff824b38ebd2fddc726b816f0e509696b83b9f78979d0cd021ca623b%40%3Cannounce.guacamole.apache.org%3E x_refsource_MISCMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00010.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TVV5K2X4EXSAVUUL7IJ3MUJ3ADWMVSBM/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNS7UHBOFV6JHWH5XOEZTE3BREGRSSQ3/ vendor-advisoryx_refsource_FEDORA
- https://research.checkpoint.com/2020/apache-guacamole-rce/ x_refsource_MISCThird Party Advisory
Change history (0)
No recorded changes yet.