Security readout for executives and security teams
Plain-English summary
CVE-2025-0994 affects older Trimble Cityworks deployments. An authenticated user could trigger unsafe deserialization and run code on the customer’s Microsoft IIS web server. Because CISA lists this CVE in KEV, treat affected internet- or partner-reachable systems as urgent.
Executive priority
Prioritize remediation for any affected Cityworks deployment, especially systems reachable by external users or operational partners. KEV status raises business urgency even though the vulnerability requires authenticated access.
Technical view
The vulnerability is CWE-502 unsafe deserialization in Trimble Cityworks before 15.8.9 and Cityworks with office companion before 23.10. CVSS v4.0 is 8.6 high. The attack vector is network-based, low complexity, no user interaction, but requires high privileges.
Likely exposure
Organizations using Trimble Cityworks on Microsoft IIS are potentially exposed if running versions before 15.8.9, or office companion before 23.10. The bundle does not identify affected CPEs or deployment prevalence.
Exploitation context
CISA KEV inclusion supports known exploitation. The provided sources do not describe exploit volume, affected victims, public exploit code, or the exact attack chain beyond authenticated remote code execution against IIS.
Researcher notes
Evidence supports authenticated RCE through unsafe deserialization. The bundle lacks payload details, affected endpoints, indicators of compromise, and detailed vendor workaround text. Avoid assuming unauthenticated exposure or specific exploit mechanics.
Mitigation direction
- Upgrade Trimble Cityworks to 15.8.9 or later.
- Upgrade Cityworks with office companion to 23.10 or later.
- Review Trimble’s customer communication for product-specific update guidance.
- Review CISA ICSA-25-037-04 for operational mitigation guidance.
Validation and detection
- Inventory all Cityworks and office companion deployments.
- Confirm installed versions meet or exceed the fixed version thresholds.
- Verify whether Cityworks is hosted on Microsoft IIS.
- Check CISA KEV tracking for due dates and remediation expectations.
- Review authentication and administrative access records for unusual 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-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-0994 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
- 8.6 (4.0)
- Known Exploited
- Yes
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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.
CISA KEV status
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/news-events/ics-advisories/icsa-25-037-04CVE reference · government-resource, third-party-advisory
- https://learn.assetlifecycle.trimble.com/i/1532182-cityworks-customer-communication-2025-02-05-docx/0?CVE reference · vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-0994CVE reference · government-resource
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.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.