CVE-2023-43826

CWE-190 — Integer OverflowCWE-79 — Cross-site Scripting (XSS)6 documents6 sources
Severity
8.8HIGH
EPSS
0.1%
top 75.53%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Apache Software Foundation Apache GuacamoleApache Guacamole
Timeline
PublishedDec 19
Latest updateOct 1

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.6 | Impact: 5.9

Affected Packages2 packages

▶NVDapache/guacamole1.5.3

🔴Vulnerability Details

4
GHSA
Liferay Portal Vulnerable to XSS in Web Content translation↗2025-10-01
▶
GHSA
GHSA-hhj4-xc5f-6f87: Apache Guacamole 1↗2023-12-19
▶
CVEList
Apache Guacamole: Integer overflow in handling of VNC image buffers↗2023-12-19
▶
OSV
CVE-2023-43826: Apache Guacamole 1↗2023-12-19
▶

📋Vendor Advisories

1
Apache
Apache guacamole: CVE-2023-43826↗
▶
CVE-2023-43826 (HIGH CVSS 8.8) | Apache Guacamole 1.5.3 and older do | cvebase.io