Security readout for executives and security teams
Plain-English summary
ThingsBoard before v4.2.1 can be tricked into making unintended outbound requests when handling uploaded SVG images in the dashboard Image Upload Gallery. This is an SSRF issue: the server, not the user’s browser, may reach internal resources. The bundle does not show confirmed active exploitation.
Executive priority
Treat this as a moderate, patch-priority infrastructure issue. It is not confirmed as actively exploited in the supplied sources, but SSRF can expose internal services from trusted network positions. Upgrade vulnerable ThingsBoard deployments during the next practical maintenance window, sooner for internet-facing or shared environments.
Technical view
CVE-2025-34282 is CWE-918 in ThingsBoard < v4.2.1. A malicious SVG uploaded through the dashboard image gallery can reference remote URLs. If server-side SVG processing parses those references, ThingsBoard may issue outbound requests, potentially reaching internal services. CVSS v4.0 score is 6.9.
Likely exposure
Exposure is most likely where ThingsBoard dashboard image uploads are reachable by untrusted or low-trust users, especially internet-facing deployments or shared tenant environments. Version evidence should confirm whether the instance is below v4.2.1.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of active exploitation. The described abuse requires uploading a crafted SVG and server-side processing that follows external references. Impact is mainly internal reachability and limited integrity or confidentiality consequences per the provided CVSS vector.
Researcher notes
The affected-version metadata in the bundle is inconsistent: the description states ThingsBoard < v4.2.1, while the affected array lists version "0" with defaultStatus "unaffected." Use the release note, pull request, and VulnCheck advisory to validate scope before broad assertions.
Mitigation direction
- Upgrade ThingsBoard to v4.2.1 or later.
- Prioritize externally reachable and multi-tenant ThingsBoard deployments.
- Review ThingsBoard vendor guidance for any temporary controls if upgrade is delayed.
- Use existing egress controls to reduce SSRF impact while patching.
- Review exposure of dashboard image upload capability to low-trust users.
Validation and detection
- Inventory ThingsBoard instances and record exact running versions.
- Confirm vulnerable systems are below v4.2.1.
- Verify the v4.2.1 update is installed where applicable.
- Review whether dashboard image uploads are available to untrusted users.
- Check logs for unexpected outbound requests around SVG image uploads.
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-918: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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 lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-34282 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:N/VI:L/VA:N/SC:L/SI:L/SA:L
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
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:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
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://github.com/thingsboard/thingsboard/releases/tag/v4.2.1CVE reference, VulnCheck · release-notes, patch
- https://github.com/thingsboard/thingsboard/pull/13927CVE reference, VulnCheck · issue-tracking
- https://www.vulncheck.com/advisories/thingsboard-svg-image-ssrfCVE 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.
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.