RCE in Hitachi Energy Relion 670/650/sam600-Io
CVE-2021-35535
Insecure Boot Image vulnerability in Hitachi Energy Relion Relion 670/650/SAM600-IO series allows an attacker who manages to get access to the front network port and to cause a reboot sequences of the device may exploit the vulnerability, where there is a tiny time gap during the booting process where an older version of VxWorks is loaded prior to application firmware booting, could exploit the vulnerability in the older version of VxWorks and cause a denial-of-service on the product. This issue affects: Hitachi Energy Relion 670 Series 2.2.2 all revisions; 2.2.3 versions prior to 2.2.3.3. Hitachi Energy Relion 670/650 Series 2.2.0 all revisions; 2.2.4 all revisions. Hitachi Energy Relion 670/650/SAM600-IO 2.2.1 all revisions.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (49.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000
Affected products
- Hitachi Energy Relion 670/650/sam600-Io — versions 2.2.1 all revisions
- Hitachi Energy Relion 670/650 Series — versions 2.2.0 all revisions, 2.2.4 all revisions
- Hitachi Energy Relion 670 Series — versions 2.2.2 all revisions, 2.2.3
- Hitachienergy Relion 650
- Hitachienergy Relion 650 Firmware — versions 2.2.0, 2.2.1, 2.2.4
- Hitachienergy Relion 670
- Hitachienergy Relion 670 Firmware — versions 2.2.0, 2.2.1, 2.2.2
- Hitachienergy Relion Sam600-Io
- Hitachienergy Relion Sam600-Io Firmware — versions 2.2.1
Weakness classification (CWE)
References
- search.abb.com/library/Download.aspx (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-35535?
- CVE-2021-35535 is a high-severity vulnerability in Hitachi Energy Relion 670/650/sam600-Io, classified under Initialization of a Resource with an Insecure Default. CVSS score: 8.1/10. Published 2021-11-18.
- How severe is CVE-2021-35535?
- High severity. CVSS v3 base score is 8.1 out of 10.