A privilege escalation issue was discovered in VyOS 1.1.8
Published Dec 17, 2018
9.9
CRITICALCVSS 3.1
EPSS 15.41%
Description
A privilege escalation issue was discovered in VyOS 1.1.8. The default configuration also allows operator users to execute the pppd binary with elevated (sudo) permissions. Certain input parameters are not properly validated. A malicious operator user can run the binary with elevated permissions and leverage its improper input validation condition to spawn an attacker-controlled shell with root privileges.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:C/I:C/A:C
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 (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 15.41% (0.15411) | 96.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 15.41% (0.15411) | 96.36th | v5 (v2026.06.15) |
| Nov 21, 2025 | 68.88% (0.68881) | 98.55th | v4 (v2025.03.14) |
| Nov 18, 2025 | 38.90% (0.38897) | 97.09th | v4 (v2025.03.14) |
| Mar 30, 2025 | 69.79% (0.69794) | 98.55th | v4 (v2025.03.14) |
| Mar 29, 2025 | 53.04% (0.53043) | 97.03th | v4 (v2025.03.14) |
| Mar 17, 2025 | 70.59% (0.70595) | 98.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.25% (0.02247) | 89.96th | v3 (v2023.03.01) |
| Jul 12, 2024 | 1.80% (0.01804) | 88.30th | v3 (v2023.03.01) |
| May 9, 2024 | 2.54% (0.02536) | 90.12th | v3 (v2023.03.01) |
| Apr 17, 2024 | 2.57% (0.02572) | 90.06th | v3 (v2023.03.01) |
| Feb 21, 2024 | 3.60% (0.03601) | 91.34th | v3 (v2023.03.01) |
| Jan 15, 2024 | 3.43% (0.03428) | 90.52th | v3 (v2023.03.01) |
| Dec 29, 2023 | 3.23% (0.03226) | 90.23th | v3 (v2023.03.01) |
| Dec 11, 2023 | 2.10% (0.02104) | 87.91th | v3 (v2023.03.01) |
| Aug 14, 2023 | 2.09% (0.02087) | 87.64th | v3 (v2023.03.01) |
| May 8, 2023 | 2.74% (0.02743) | 88.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.55% (0.02553) | 88.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.47% (0.12470) | 95.34th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.47% (0.12470) | 94.98th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.47% (0.12470) | 89.48th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.84% (0.05841) | 80.61th | v1 |
| Jan 6, 2022 | 5.84% (0.05841) | 80.42th | v1 |
| Sep 1, 2021 | 5.84% (0.05841) | 89.13th | v1 |
| Apr 14, 2021 | 5.84% (0.05841) | 0.00th | v1 |
No CWE recorded.
References (3)
- http://packetstormsecurity.com/files/159234/VyOS-restricted-shell-Escape-Privilege-Escalation.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- https://blog.mirch.io/2018/11/05/cve-2018-18556-vyos-privilege-escalation-via-sudo-pppd-for-operator-users/ x_refsource_MISCExploitThird Party Advisory
- https://blog.vyos.io/the-operator-level-is-proved-insecure-and-will-be-removed-in-the-next-releases x_refsource_CONFIRMExploitVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/159234/VyOS-restricted-shell-Escape-Privilege-Escalation.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| https://blog.mirch.io/2018/11/05/cve-2018-18556-vyos-privilege-escalation-via-sudo-pppd-for-operator-users/ | x_refsource_MISCExploitThird Party Advisory | |
| https://blog.vyos.io/the-operator-level-is-proved-insecure-and-will-be-removed-in-the-next-releases | x_refsource_CONFIRMExploitVendor Advisory |
Change history (0)
No recorded changes yet.