In VOS user session identifier (authentication token) is issued to the browser prior to authentication but is not changed after the user successfully logs into the application
Published May 26, 2021
8.8
HIGHCVSS 3.1
EPSS 0.91%
Description
In VOS user session identifier (authentication token) is issued to the browser prior to authentication but is not changed after the user successfully logs into the application. Failing to issue a new session ID following a successful login introduces the possibility for an attacker to set up a trap session on the device the victim is likely to login with.
Affected products
- Vendor n/a Product Versa VOS Defaultn/a
- Version Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1StatusaffectedConstraints-
- 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 | Versa VOS | n/a |
|
- < 16.1r2s11
- ≥ 20.2.0 · < 20.2.2
- ≥ 21.1.0 · < 21.1.1
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:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/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
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.91% (0.00911) | 58.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.91% (0.00911) | 55.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.30% (0.00303) | 51.39th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00104) | 44.23th | v3 (v2023.03.01) |
| Jun 28, 2024 | 0.10% (0.00104) | 42.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00104) | 40.90th | 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 | 0.44% (0.00442) | 10.76th | v5 (v2026.06.15) |
| May 27, 2021 | 0.44% (0.00442) | 0.00th | v1 |
References (1)
- https://hackerone.com/reports/1168192 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://hackerone.com/reports/1168192 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.