CVE catalog
CVE-2018-20178
rdesktop: CVE-2018-20178
- Severity
- High · CVSS 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 4.34% · Oct 25, 2026
rdesktop versions up to and including v1.8.3 contain an Out-Of-Bounds Read in the function process_demand_active() that results in a Denial of Service (segfault).
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 |
|---|---|---|---|---|
| Debian | rdesktop | sid | 1.9.1-1 | fixed |
| Debian | rdesktop | forky | 1.9.0-3 | fixed |
| Debian | rdesktop | trixie | 1.9.0-2 | fixed |
| Debian | rdesktop | bookworm | 1.9.0-2 | fixed |
| Alpine | rdesktop | 3.10 | 1.8.6-r0 | fixed |
| Alpine | rdesktop | 3.11 | 1.8.6-r0 | fixed |
| Alpine | rdesktop | 3.12 | 1.8.6-r0 | fixed |
| Alpine | rdesktop | 3.13 | 1.8.6-r0 | fixed |
| Alpine | rdesktop | 3.14 | 1.8.6-r0 | fixed |
| Ubuntu | rdesktop | 16.04 | 1.8.3-1 | vulnerable |
| Ubuntu | rdesktop | 18.04 | 1.8.3-2 | vulnerable |
| Ubuntu | rdesktop | 18.04 | 1.8.3-2build1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rdesktop | source | sid | 1.8.4-1 | not yet assigned | Not reported | Not reported |
| Debian | rdesktop | source | forky | 1.8.4-1 | not yet assigned | Not reported | Not reported |
| Debian | rdesktop | source | trixie | 1.8.4-1 | not yet assigned | Not reported | Not reported |
| Debian | rdesktop | source | bookworm | 1.8.4-1 | not yet assigned | Not reported | Not reported |
| Alpine | rdesktop | apk | 3.10 | 1.8.6-r0 | Not reported | ALPINE-CVE-2018-20178 | Not reported |
| Alpine | rdesktop | apk | 3.11 | 1.8.6-r0 | Not reported | ALPINE-CVE-2018-20178 | Not reported |
| Alpine | rdesktop | apk | 3.12 | 1.8.6-r0 | Not reported | ALPINE-CVE-2018-20178 | Not reported |
| Alpine | rdesktop | apk | 3.13 | 1.8.6-r0 | Not reported | ALPINE-CVE-2018-20178 | Not reported |
| Alpine | rdesktop | apk | 3.14 | 1.8.6-r0 | Not reported | ALPINE-CVE-2018-20178 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
[Debian 13 (Trixie)]
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2019_2135-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2018-20178]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2018-20178]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2018-20178]
- [https://security-tracker.debian.org/tracker/CVE-2018-20178]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]