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Vulnerability record · CVE-2018-8793 · published 5 February 2019

CVE-2018-8793: Rdesktop heap-based buffer overflow vulnerability

Rdesktop · Rdesktop

rdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function cssp_read_tsrequest() that results in a memory corruption and probably even a remote code execution.

9.8 CVSS 3.1 Critical EPSS 7.1% · top 6.0% CWE-122 · Heap-based buffer overflowCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
7.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

rdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function cssp_read_tsrequest() that results in a memory corruption and probably even a remote code execution.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/106938 Third Party AdvisoryVDB Entry
https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html Mailing ListThird Party Advisory
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ Third Party Advisory
https://security.gentoo.org/glsa/201903-06 Third Party Advisory
https://www.debian.org/security/2019/dsa-4394 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/106938 Third Party AdvisoryVDB Entry
https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html Mailing ListThird Party Advisory
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ Third Party Advisory
https://security.gentoo.org/glsa/201903-06 Third Party Advisory
https://www.debian.org/security/2019/dsa-4394 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-8793), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.