Security readout for executives and security teams
Plain-English summary
This vulnerability lets an unauthenticated attacker upload a malicious configuration-related HTML file to affected Leica GNSS receivers. When a user views it, JavaScript can run in that user’s browser session. The business risk is theft or misuse of browser-session data tied to device administration, especially where receiver web interfaces are reachable from untrusted networks.
Executive priority
Treat this as a high-priority exposure review for operational technology and surveying infrastructure. Prioritize internet-facing or broadly reachable receiver management interfaces first. Public exploit information raises urgency, but the provided sources do not confirm active exploitation.
Technical view
CVE-2018-25131 is a stored cross-site scripting issue in the configuration file upload functionality of Leica Geosystems GR10, GR25, GR30, and GR50 GNSS firmware. The source bundle lists versions 4.30.063, 4.20.232, 4.11.606, 3.22.1818, 3.10.1633, 2.62.782, and 1.00.395. CVSS 3.1 is 7.2, CWE-79.
Likely exposure
Exposure is most likely where Leica GR-series GNSS receiver web management interfaces are network-reachable, especially from the internet or shared operational networks. Organizations using the listed firmware versions should assume potential exposure until verified.
Exploitation context
The bundle cites an ExploitDB entry and Zero Science Lab disclosure, so public exploit information exists. The CVE is not marked KEV in the provided data, and no cited source states active exploitation in the wild.
Researcher notes
Evidence supports stored XSS through configuration upload on specified Leica GR-series GNSS firmware. The provided data does not identify an official patched version or vendor advisory specific to this CVE. Avoid assuming exploit-in-the-wild status; KEV is false in the bundle.
Mitigation direction
- Identify Leica GR10, GR25, GR30, and GR50 GNSS receivers in the environment.
- Check firmware versions against the affected versions listed in the CVE source bundle.
- Consult Leica Geosystems guidance for fixed firmware or official mitigation instructions.
- Restrict receiver web interfaces to trusted management networks only.
- Block internet access to receiver administration interfaces where possible.
- Limit configuration upload capability to trusted administrators.
Validation and detection
- Inventory receiver model and firmware version from asset records or device administration pages.
- Verify whether web management interfaces are reachable from untrusted networks.
- Review access logs for unexpected configuration uploads or suspicious HTML file names.
- Confirm compensating controls restrict administrative access to trusted users and networks.
- Track vendor guidance and document remediation status for each affected receiver.
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-79: 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 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-2018-25131 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
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/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:N/S:C/C:L/I:L/A:N3.92.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-46091CVE reference · exploit
- Leica Geosystems Official Product HomepageCVE reference · product
- Zero Science Lab Disclosure (ZSL-2019-5503)CVE reference · 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 Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.