Security readout for executives and security teams
Plain-English summary
CVE-2026-1626 concerns weak CBC-based SSH cipher suites on SICK LMS1000 and MRS1000 devices. If an attacker can intercept or interact with SSH network traffic, they may observe or manipulate parts of encrypted communication. The issue is rated medium by the source data and is not listed as CISA KEV.
Executive priority
Treat as a near-term industrial network hardening item, not an emergency based on current evidence. Prioritize sites where affected SICK devices are remotely managed, connected to shared networks, or reachable from less trusted zones.
Technical view
The vulnerability is CWE-327: use of a broken or risky cryptographic algorithm. The CVSS v3.1 score is 6.5 with network attack vector, low complexity, no privileges, and user interaction required. The reported impact emphasizes confidentiality, with no integrity or availability impact in the supplied vector, despite the narrative mentioning possible manipulation.
Likely exposure
Exposure is most relevant where SSH to SICK LMS1000 or MRS1000 devices is reachable over untrusted, shared, or poorly segmented networks. Organizations should verify actual installed firmware/product status against SICK advisory SCA-2026-0005 because the provided affected-version data is minimal.
Exploitation context
No active exploitation is supported by the supplied sources, and the CVE is not in CISA KEV. Practical risk depends on an attacker’s ability to intercept or interact with SSH traffic, which is more plausible on exposed, flat, or compromised industrial networks.
Researcher notes
The supplied record names SICK LMS1000 and MRS1000 but lists sparse affected-version information. Do not assume broader product impact. The CVSS vector and narrative differ slightly on integrity impact, so researchers should rely on vendor advisory details before drawing conclusions.
Mitigation direction
- Review SICK advisory SCA-2026-0005 for vendor-approved remediation or configuration guidance.
- Restrict SSH access to trusted administration networks and users only.
- Apply ICS network segmentation and remote access controls consistent with CISA recommended practices.
- Monitor SICK PSIRT for updates, patches, or revised affected-version information.
Validation and detection
- Inventory SICK LMS1000 and MRS1000 devices and confirm SSH exposure paths.
- Compare device details against SICK advisory SCA-2026-0005 and PSIRT updates.
- Assess whether SSH management traffic crosses untrusted or shared network segments.
- Review configurations for use of CBC-based SSH cipher suites where safely verifiable.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-327: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-1626 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://sick.com/psirtCVE reference · x_SICK PSIRT Security Advisories
- https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdfCVE reference · x_SICK Operating Guidelines
- https://www.cisa.gov/resources-tools/resources/ics-recommended-practicesCVE reference · x_ICS-CERT recommended practices on Industrial Security
- https://www.first.org/cvss/calculator/3.1CVE reference · x_CVSS v3.1 Calculator
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0005.jsonCVE reference · x_The canonical URL.
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0005.pdfCVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Use of a Broken or Risky Cryptographic Algorithm
Use of a Broken or Risky Cryptographic Algorithm represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.