A buffer overflow exists in HelpSystems tcpcrypt on Linux, used for BoKS encrypted telnet through BoKS version 6.7.1
Published Feb 8, 2019
9.8
CRITICALCVSS 3.0
EPSS 1.19%
Description
A buffer overflow exists in HelpSystems tcpcrypt on Linux, used for BoKS encrypted telnet through BoKS version 6.7.1. Since tcpcrypt is setuid, exploitation leads to privilege escalation.
Affected products
No data.
- ≥ 6.6.0 · ≤ 6.7.1
Running on/with
- n/a
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.19% (0.01185) | 66.69th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.19% (0.01185) | 66.42th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.25% (0.00250) | 65.34th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.25% (0.00250) | 63.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.25% (0.00250) | 61.02th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00416) | 10.04th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
No CWE recorded.
References (1)
- https://community.helpsystems.com/knowledge-base/fox-technologies/hotfix/515/ x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://community.helpsystems.com/knowledge-base/fox-technologies/hotfix/515/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.