freerdp: Integer truncation leading to heap-based buffer overflow in update_read_bitmap_update() function
Published Nov 29, 2018
9.8
CRITICALCVSS 3.1
EPSS 8.16%
Description
FreeRDP prior to version 2.0.0-rc4 contains an Integer Truncation that leads to a Heap-Based Buffer Overflow in function update_read_bitmap_update() and results in a memory corruption and probably even a remote code execution.
Affected products
-
- Version All versions prior to 2.0.0-rc4StatusaffectedConstraints-
- 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. | FreeRDP | n/a |
|
Configuration 1
Configuration 2
- 14.04
- 16.04
- 18.04
- 18.10
Configuration 3
- 8.0
Configuration 4
- 28
Configuration 5
- 7.0
- 7.0
- 7.6
- 7.6
- 7.6
- 7.0
No data.
Red Hat Enterprise Linux 7
freerdp-0:1.0.2-15.el7_6.1
Fixed · RHSA-2019:0697
Red Hat Enterprise Linux 6
freerdp
Will not fix
Red Hat Enterprise Linux 8
freerdp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | freerdp-0:1.0.2-15.el7_6.1 | Fixed | RHSA-2019:0697 |
| Red Hat Enterprise Linux 6 | freerdp | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | freerdp | Not affected | 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:N/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 1, 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 (28 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.16% (0.08156) | 94.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.16% (0.08156) | 94.11th | v5 (v2026.06.15) |
| May 27, 2026 | 14.33% (0.14327) | 94.50th | v4 (v2025.03.14) |
| Apr 13, 2026 | 9.61% (0.09605) | 92.88th | v4 (v2025.03.14) |
| Dec 28, 2025 | 17.75% (0.17754) | 94.89th | v4 (v2025.03.14) |
| Dec 27, 2025 | 19.66% (0.19664) | 95.25th | v4 (v2025.03.14) |
| Oct 30, 2025 | 17.75% (0.17754) | 94.83th | v4 (v2025.03.14) |
| Oct 28, 2025 | 19.56% (0.19563) | 95.15th | v4 (v2025.03.14) |
| Oct 27, 2025 | 21.60% (0.21604) | 95.48th | v4 (v2025.03.14) |
| Oct 1, 2025 | 19.56% (0.19563) | 95.24th | v4 (v2025.03.14) |
| Aug 1, 2025 | 21.92% (0.21915) | 95.57th | v4 (v2025.03.14) |
| May 25, 2025 | 17.90% (0.17899) | 94.78th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.96% (0.10964) | 92.78th | v4 (v2025.03.14) |
| Mar 29, 2025 | 17.65% (0.17654) | 91.92th | v4 (v2025.03.14) |
| Mar 17, 2025 | 11.23% (0.11227) | 92.97th | v4 (v2025.03.14) |
| Jan 24, 2025 | 4.96% (0.04960) | 92.78th | v3 (v2023.03.01) |
| Dec 17, 2024 | 6.86% (0.06857) | 93.83th | v3 (v2023.03.01) |
| Mar 14, 2024 | 3.68% (0.03681) | 91.49th | v3 (v2023.03.01) |
| Nov 23, 2023 | 3.65% (0.03647) | 90.70th | v3 (v2023.03.01) |
| Nov 8, 2023 | 3.09% (0.03086) | 89.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.93% (0.02933) | 89.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.15% (0.07154) | 92.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.15% (0.07154) | 91.53th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.15% (0.07154) | 80.03th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.32% (0.03324) | 66.61th | v1 |
| Jan 6, 2022 | 3.32% (0.03324) | 66.29th | v1 |
| Sep 1, 2021 | 3.32% (0.03324) | 81.62th | v1 |
| Apr 14, 2021 | 3.32% (0.03324) | 0.00th | v1 |
References (12)
- http://www.securityfocus.com/bid/106938 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2019:0697 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-8786 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1671359 Issue Tracking
- https://github.com/FreeRDP/FreeRDP/commit/445a5a42c500ceb80f8fa7f2c11f3682538033f3 x_refsource_CONFIRMPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00015.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YVJKO2DR5EY4C4QZOP7SNNBEW2JW6FHX/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2018-8786
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ x_refsource_CONFIRMExploitThird Party Advisory
- https://usn.ubuntu.com/3845-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3845-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-8786
Change history (0)
No recorded changes yet.