CVE catalog
CVE-2023-43826
UBUNTU-CVE-2023-43826
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.89% · Oct 25, 2026
Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow. If a user connects to a malicious or compromised VNC server, specially-crafted data could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process. Users are recommended to upgrade to version 1.5.4, which fixes this issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Ubuntu | guacamole-client | 16.04 | 0.8.3-1.1 | vulnerable |
| Ubuntu | guacamole-client | 16.04 | 0.8.3-1.2 | vulnerable |
| Ubuntu | guacamole-client | 18.04 | 0.9.9+dfsg-1 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed: