How severe is CVE-2008-1803?

CVE-2008-1803 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-1803 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1803?

CVE-2008-1803 affects Rdesktop. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-1803?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-1803 published?

CVE-2008-1803 was published on 2008-05-12 and last updated on 2026-06-16.

CVE-2008-1803

CVE-2008-1803 is a critical-severity vulnerability in Rdesktop with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-189.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Rdesktop
Published: 2008-05-12
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2008-1803?: 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.
How severe is CVE-2008-1803?: CVE-2008-1803 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-1803 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1803?: CVE-2008-1803 affects Rdesktop. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-1803?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-1803 published?: CVE-2008-1803 was published on 2008-05-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:rdesktop:rdesktop:1.5.0:*:*:*:*:*:*:*

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