Security readout for executives and security teams
Plain-English summary
CVE-2026-25872 lets an unauthenticated remote user read files from a JUNG Smart Panel 5.1 KNX web interface. The likely business impact is sensitive configuration disclosure from building-control equipment, not system takeover based on the supplied CVSS vector.
Executive priority
Treat as a moderate-priority building-technology exposure issue. Prioritize internet-exposed or broadly reachable panels, because attackers need no credentials, but the documented impact is file disclosure rather than control or service disruption.
Technical view
The vulnerability is CWE-22 path traversal in the embedded web interface of JUNG Smart Panel KNX firmware L1.12.22 and prior. Network access, low complexity, no privileges, and no user interaction are required. The reported impact is limited confidentiality loss in the web server context.
Likely exposure
Exposure is most relevant where JUNG Smart Panel 5.1 KNX web interfaces are reachable from corporate, building-management, or internet-facing networks. The bundle does not identify other affected JUNG products.
Exploitation context
The CVE is not listed as KEV in the supplied data. A public ZeroScience reference is tagged as exploit-related, but the bundle provides no evidence of active exploitation in the wild.
Researcher notes
Affected-version metadata is limited: the description states L1.12.22 and prior, while the structured affected entry is sparse. Validate against real device firmware and vendor advisories before broad conclusions.
Mitigation direction
- Identify JUNG Smart Panel 5.1 KNX assets and firmware versions.
- Check JUNG guidance for fixed firmware or official mitigation.
- Remove internet exposure for the embedded web interface.
- Restrict access to trusted management networks only.
- Monitor for suspicious file access attempts against panel web interfaces.
Validation and detection
- Confirm whether deployed panels run firmware L1.12.22 or prior.
- Review firewall, VPN, and building-network paths to the web interface.
- Check logs for unusual traversal-like file access requests.
- Verify compensating access controls block unauthenticated remote access.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-25872 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——VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4VulnCheckVulnerability 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://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5969.phpCVE reference, VulnCheck · technical-description, exploit
- https://www.jung-group.com/CVE reference, VulnCheck · product
- https://downloads.jung.de/public/en/pdf/productdocumentation/en_sp5.1knx_09012015.pdfCVE reference, VulnCheck · product
- https://www.vulncheck.com/advisories/jung-smart-panel-knx-unauthenticated-path-traversalCVE reference, VulnCheck · third-party-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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.