Security readout for executives and security teams
Plain-English summary
CVE-2023-35120 is a cross-site request forgery issue in PiiGAB M-Bus SoftwarePack 900S. If a logged-in device owner clicks a malicious link, the browser may send stored cookies and cause the device to execute an unintended GET or POST request. The stated impact is high across confidentiality, integrity, and availability.
Executive priority
Treat this as high priority for any operational environment using the affected PiiGAB product. The issue needs user interaction, but a successful phishing lure could drive unauthorized device actions with high stated business impact.
Technical view
The vulnerability is CWE-352 in PiiGAB M-Bus SoftwarePack 900S. The CVSS 3.1 score is 8.8 with network attack vector, low complexity, no attacker privileges, and required user interaction. The described attack depends on an authenticated owner session and browser cookie reuse against device request handlers.
Likely exposure
Exposure is limited to environments running PiiGAB M-Bus SoftwarePack 900S where device owners administer the system through a browser and may retain authenticated cookies. The bundle does not identify other affected products or versions.
Exploitation context
The provided sources describe phishing-based exploitation requiring the device owner to click a malicious link while logged in. CISA KEV status is false, and the bundle provides no evidence of active exploitation in the wild.
Researcher notes
Evidence is narrow but clear: CSRF, affected SoftwarePack 900S, CVSS 8.8, and phishing with stored cookies. No exploit code, active exploitation, patch version, or named workaround is included in the supplied bundle.
Mitigation direction
- Check PiiGAB and CISA guidance for supported remediation or configuration advice.
- Inventory PiiGAB M-Bus SoftwarePack 900S deployments and owners with administrative access.
- Reduce administrative browsing exposure until vendor remediation is confirmed.
- Train device owners not to open unsolicited links while authenticated to device interfaces.
Validation and detection
- Confirm whether PiiGAB M-Bus SoftwarePack 900S is deployed.
- Verify the installed version and compare it with vendor or CISA guidance.
- Review administrative access patterns for persistent authenticated browser sessions.
- Check monitoring for unexpected device commands following user web activity.
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-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2023-35120 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-187-01CVE reference
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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.