rdesktop: Remote code execution in cssp_read_tsrequest
Published Feb 5, 2019
9.8
CRITICALCVSS 3.1
EPSS 7.06%
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.
Affected products
-
- Version All versions up to and including v1.8.3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Check Point Software Technologies Ltd. | Rdesktop | n/a |
|
Configuration 2
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 5
rdesktop
Will not fix
Red Hat Enterprise Linux 6
rdesktop
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | rdesktop | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | rdesktop | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 7.06% (0.07056) | 94.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.06% (0.07056) | 93.36th | v5 (v2026.06.15) |
| Apr 13, 2026 | 6.67% (0.06669) | 91.22th | v4 (v2025.03.14) |
| Nov 21, 2025 | 7.95% (0.07955) | 91.71th | v4 (v2025.03.14) |
| Nov 18, 2025 | 11.29% (0.11287) | 92.82th | v4 (v2025.03.14) |
| Aug 1, 2025 | 8.09% (0.08095) | 91.84th | v4 (v2025.03.14) |
| Jun 19, 2025 | 6.79% (0.06788) | 90.85th | v4 (v2025.03.14) |
| Mar 30, 2025 | 13.02% (0.13017) | 93.46th | v4 (v2025.03.14) |
| Mar 29, 2025 | 22.29% (0.22293) | 93.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 12.73% (0.12729) | 93.44th | v4 (v2025.03.14) |
| Jan 15, 2025 | 8.34% (0.08337) | 94.42th | v3 (v2023.03.01) |
| Dec 17, 2024 | 10.42% (0.10419) | 94.98th | v3 (v2023.03.01) |
| Dec 12, 2024 | 4.31% (0.04310) | 92.63th | v3 (v2023.03.01) |
| Jun 28, 2024 | 4.71% (0.04707) | 92.70th | v3 (v2023.03.01) |
| May 16, 2024 | 3.90% (0.03896) | 91.93th | v3 (v2023.03.01) |
| Jan 30, 2024 | 2.79% (0.02786) | 89.60th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.61% (0.02606) | 88.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.73% (0.06729) | 91.59th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.73% (0.06729) | 90.78th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.73% (0.06729) | 78.90th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.96% (0.02964) | 64.93th | v1 |
| Jan 6, 2022 | 2.96% (0.02964) | 64.59th | v1 |
| Sep 1, 2021 | 2.96% (0.02964) | 81.00th | v1 |
| Apr 14, 2021 | 2.96% (0.02964) | 0.00th | v1 |
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/106938 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-8793 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1670406 Issue Tracking
- https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-8793
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ x_refsource_CONFIRMThird Party Advisory
- https://security.gentoo.org/glsa/201903-06 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-8793
- https://www.debian.org/security/2019/dsa-4394 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.