Incorrect implementation of authentication algorithm issue in UNIVERGE SV9500 series from V1 to V7and SV8500 series from S6 to S8 allows an attacker to access the remote system maintenance feature and obtain the information by sending a specially crafted request to a specific URL
Published Jan 13, 2021
7.5
HIGHCVSS 3.1
EPSS 1.16%
Description
Incorrect implementation of authentication algorithm issue in UNIVERGE SV9500 series from V1 to V7and SV8500 series from S6 to S8 allows an attacker to access the remote system maintenance feature and obtain the information by sending a specially crafted request to a specific URL.
Affected products
-
- Version SV9500 series from V1 to V7and SV8500 series from S6 to S8StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| NEC Corporation | UNIVERGE SV9500/SV8500 series | n/a |
|
Configuration 1
- ≥ v1 · ≤ v7
Running on/with
- n/a
Configuration 2
- ≥ s6 · ≤ s8
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
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 4, 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 (12 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 1.16% (0.01164) | 66.14th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.16% (0.01164) | 65.85th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.17% (0.00174) | 55.03th | v3 (v2023.03.01) |
| Sep 29, 2023 | 0.17% (0.00174) | 54.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00158) | 50.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.03% (0.09029) | 86.86th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (2)
- https://jvn.jp/en/jp/JVN38784555/index.html x_refsource_MISCThird Party Advisory
- https://www.necplatforms.co.jp/en/press/security_adv.html x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://jvn.jp/en/jp/JVN38784555/index.html | x_refsource_MISCThird Party Advisory | |
| https://www.necplatforms.co.jp/en/press/security_adv.html | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.