Security readout for executives and security teams
Plain-English summary
Many Siemens SIPROTEC 5 protection devices generate web-session identifiers with insufficient randomness. A remote unauthenticated attacker could guess a session identifier and read limited information from the device web server without authorization.
Executive priority
Treat as a moderate OT exposure issue. It does not indicate control modification or outage impact, but unauthenticated read access on protection equipment deserves timely inventory, access restriction, and vendor-guided remediation.
Technical view
CVE-2024-54017 is CWE-334 affecting numerous SIPROTEC 5 and SIPROTEC 5 Compact models and communication processor variants. CVSS 4.0 is 6.9, network exploitable, low complexity, no privileges, no user interaction, with limited confidentiality impact only.
Likely exposure
Exposure is most relevant where affected SIPROTEC web servers are reachable from operations, corporate, vendor-access, or internet-connected networks. Devices isolated from untrusted network paths have lower practical exposure.
Exploitation context
The source bundle says an unauthenticated remote attacker could brute force a session identifier to gain limited read access. KEV is false, and no provided source states active exploitation.
Researcher notes
The affected list is broad and version handling differs by product and CP variant, including some entries marked all versions. Validate exact model, CP type, and firmware before concluding exposure or remediation status.
Mitigation direction
- Check Siemens ProductCERT advisory SSA-786884 for product-specific update or mitigation guidance.
- Inventory SIPROTEC 5 models, CP variants, and firmware versions against the affected ranges.
- Restrict access to device web servers to trusted management networks only.
- Disable unnecessary web access where Siemens operational guidance permits.
- Prioritize remediation for devices reachable from non-OT or remote-access paths.
Validation and detection
- Identify deployed SIPROTEC 5 and SIPROTEC 5 Compact devices and communication processor variants.
- Confirm firmware versions, especially versions before V11.0 where listed as affected.
- Verify whether the device web server is enabled and network reachable.
- Review segmentation rules limiting web access to authorized management hosts.
- Check Siemens advisory for any model-specific exceptions or fixed versions.
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-334: 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-2024-54017 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
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N——siemensCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4siemensVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/html/ssa-786884.htmlCVE reference, siemens
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.
Small Space of Random Values
Small Space of Random Values represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.