7.5
CVE-2020-27632
- EPSS 1.21%
- Veröffentlicht 10.03.2021 18:15:12
- Zuletzt bearbeitet 21.11.2024 05:21:32
- Quelle cve@mitre.org
- CVE-Watchlists
- Unerledigt
LoginIn SIMATIC MV400 family versions prior to v7.0.6, the ISN generator is initialized with a constant value and has constant increments. An attacker could predict and hijack TCP sessions.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Siemens ≫ Simatic Mv420 Firmware Version < 7.0.6
Siemens ≫ Simatic Mv440 Firmware Version < 7.0.6
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 1.21% | 0.645 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 7.5 | 3.9 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
|
| nvd@nist.gov | 5 | 10 | 2.9 |
AV:N/AC:L/Au:N/C:N/I:P/A:N
|
https://cert-portal.siemens.com/productcert/pdf/ssa-599268.pdf
https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01
https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/