The web-based management (WBM) interface in Unify (former Siemens) OpenStage SIP and OpenScape Desk Phone IP V3 devices before R3.32.0 generates session cookies with insufficient entropy, which makes it easier for remote attackers to hijack sessions via a brute-force attack
Published Apr 12, 2018
8.1
HIGHCVSS 3.1
EPSS 1.59%
Description
The web-based management (WBM) interface in Unify (former Siemens) OpenStage SIP and OpenScape Desk Phone IP V3 devices before R3.32.0 generates session cookies with insufficient entropy, which makes it easier for remote attackers to hijack sessions via a brute-force attack.
Affected products
No data.
Configuration 1
- < r3.32.0
Running on/with
- n/a
- n/a
- n/a
Configuration 2
- < r3.32.0
Running on/with
- n/a
- n/a
- 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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.59% (0.01591) | 74.76th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.63% (0.01626) | 72.97th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.31% (0.00312) | 52.14th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.38% (0.00384) | 73.93th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.38% (0.00384) | 72.35th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.38% (0.00384) | 68.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (2)
- https://networks.unify.com/security/advisories/OBSO-1501-02.pdf x_refsource_CONFIRMMitigationVendor Advisory
- https://www.modzero.ch/advisories/MZ-14-02-Siemens-Unify-OpenStage.txt x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://networks.unify.com/security/advisories/OBSO-1501-02.pdf | x_refsource_CONFIRMMitigationVendor Advisory | |
| https://www.modzero.ch/advisories/MZ-14-02-Siemens-Unify-OpenStage.txt | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.