Security readout for executives and security teams
Plain-English summary
CVE-2025-56219 affects SigningHub v8.6.8. A low-privileged attacker can add large numbers of user accounts because access control and rate limiting are insufficient. The main business risk is service disruption from resource exhaustion; integrity impact is limited to unauthorized account creation.
Executive priority
Treat this as high priority for exposed SigningHub environments because availability impact is high and exploitation requires only low privileges. Prioritize confirming affected deployments, reducing access, and obtaining vendor remediation guidance.
Technical view
The CVE describes CWE-284 incorrect access control in SigningHub v8.6.8. CVSS 3.1 is 7.1 high: network exploitable, low complexity, low privileges required, no user interaction, unchanged scope, no confidentiality impact, low integrity impact, high availability impact.
Likely exposure
Exposure is most likely for internet-facing or broadly accessible SigningHub v8.6.8 deployments where low-privileged users can reach account creation or registration functionality. The bundle does not provide CPEs or a broader affected-version range.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. A public GitHub reference is listed, but the provided evidence only supports the described vulnerability and does not prove exploitation in the wild.
Researcher notes
Evidence is limited. The CVE names SigningHub v8.6.8, CWE-284, and DoS through unrestricted account creation, but affected vendor/product metadata is listed as n/a and no patch details are provided in the bundle.
Mitigation direction
- Check SigningHub vendor guidance for fixed versions or supported mitigations.
- Restrict access to user creation and registration workflows.
- Apply rate limiting or abuse controls where administratively available.
- Monitor for abnormal account creation volume and resource spikes.
- Disable unused self-service account creation paths if business operations allow.
Validation and detection
- Confirm whether any SigningHub instance is running v8.6.8.
- Review who can create or trigger new user accounts.
- Check logs for sudden account growth or repeated creation attempts.
- Verify rate limiting or abuse controls around account creation.
- Track vendor advisories because the bundle names no specific patch.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2025-56219 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H2.84.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
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/saykino/CVE-2025-56219CVE reference, mitre
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 Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.