Integer signedness error in the xrealloc function (rdesktop.c) in RDesktop 1.5.0 allows remote attackers to execute arbitrary code via unknown parameters that trigger a heap-based overflow. NOTE: the role of the channel_process function was not specified by the original researcher.
Conclusion & alert: CVE-2008-1803 is rated High Exploit Risk (79.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.74%, 93th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 16.37% | 6.74% | -9.63% |
| 2 | 2025-12-20 | 15.48% | 16.37% | +0.89% |
| 3 | 2025-12-01 | — | 15.48% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2008-1803 not yet assigned priority: Debian including 1 source packages (rdesktop), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2008-1803 |
gentoo
|
normal | CVE-2008-1803: 1 GLSA(s) (200806-04), 1 atom(s) (net-misc/rdesktop); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2008-1803 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2008-1803 |
ubuntu
|
low | CVE-2008-1803 low priority: Ubuntu including 1 source packages (rdesktop), 5 status rows across 5 suites (dapper, feisty, gutsy, hardy, upstream): released 5. | https://ubuntu.com/security/CVE-2008-1803 |