An attacker-controlled memory allocation size can be passed to the C++ new operator in RnaDaSvr.dll by sending a specially crafted ConfigureItems message to TCP port 4241
Published Dec 29, 2020
7.5
HIGHCVSS 3.1
EPSS 38.83%
Description
An attacker-controlled memory allocation size can be passed to the C++ new operator in RnaDaSvr.dll by sending a specially crafted ConfigureItems message to TCP port 4241. This will cause an unhandled exception, resulting in termination of RSLinxNG.exe. Observed in FactoryTalk 6.11. All versions of FactoryTalk Linx are affected.
Affected products
- Vendor n/a Product Rockwell FactoryTalk Linx Defaultn/a
- Version All versions of FactoryTalk LinxStatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Rockwell FactoryTalk Linx | n/a |
|
- ≤ 6.11
No data.
No Red Hat product state for this CVE.
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:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/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 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 38.83% (0.38828) | 98.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 38.83% (0.38828) | 98.39th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.19% (0.00194) | 57.36th | v3 (v2023.03.01) |
| Dec 18, 2023 | 0.19% (0.00194) | 57.17th | v3 (v2023.03.01) |
| Nov 21, 2023 | 0.14% (0.00136) | 48.91th | v3 (v2023.03.01) |
| Sep 14, 2023 | 0.11% (0.00109) | 43.09th | v3 (v2023.03.01) |
| Aug 5, 2023 | 0.08% (0.00081) | 33.70th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00061) | 23.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v1 |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Sep 1, 2021 | 0.42% (0.00416) | 25.53th | v1 |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (1)
- https://www.tenable.com/security/research/tra-2020-71 x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.tenable.com/security/research/tra-2020-71 | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.