Security readout for executives and security teams
Plain-English summary
This is a low-severity open redirect issue in Fortinet products. It may let an unauthenticated attacker make a Fortinet URL send a user to an untrusted site. The main business risk is phishing or brand-trust abuse, not direct system takeover.
Executive priority
Handle through normal patch governance, with faster attention for internet-facing Fortinet services. This is not a crisis-level vulnerability from the supplied evidence, but it can support phishing workflows if left exposed.
Technical view
CVE-2025-47890 is a CWE-601 open redirect affecting specified FortiOS, FortiProxy, and FortiSASE versions. The CVSS 3.1 score is 2.5, with adjacent attack vector, high complexity, no privileges, user interaction required, no confidentiality impact, and low integrity impact.
Likely exposure
Exposure is most likely where affected FortiOS, FortiProxy, or FortiSASE versions are reachable by users and can be used in trusted links. Internet-facing access paths increase phishing usefulness, but the source data does not indicate direct remote compromise.
Exploitation context
The source bundle says exploitation requires crafted HTTP requests and user interaction. It does not show CISA KEV listing or other evidence of active exploitation. Exploit maturity is marked proof-of-concept in the CVSS vector, but no weaponized details are provided here.
Researcher notes
Key gaps are absent fixed-version details and no independent exploitation reporting in the supplied bundle. Validate against Fortinet’s advisory before closure. Do not treat affected-version lists as proof of exploitability in a specific deployment without configuration review.
Mitigation direction
- Check Fortinet FG-IR-24-542 for the vendor-recommended fixed releases.
- Prioritize upgrades for externally reachable FortiOS, FortiProxy, and FortiSASE deployments.
- Avoid circulating trusted Fortinet URLs from unverified sources.
- Monitor vendor advisories for updated affected-version and remediation guidance.
Validation and detection
- Inventory FortiOS, FortiProxy, and FortiSASE versions across the environment.
- Compare deployed versions against the affected ranges in the CVE record.
- Identify user-facing or externally reachable Fortinet interfaces and portals.
- Review logs for unusual redirect-related requests without replaying payloads.
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-601: 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 lookupCVE-2025-47890 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
- Low
- CVSS
- 2.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
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:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C1.21.4fortinetVulnerability scoring details
Base CVSS 3.1 score
2.5LowVector: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
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://fortiguard.fortinet.com/psirt/FG-IR-24-542CVE reference, fortinet
- https://cert-portal.siemens.com/productcert/html/ssa-864900.htmlCVE reference, siemens-SADP
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.
URL Redirection to Untrusted Site ('Open Redirect')
URL Redirection to Untrusted Site ('Open Redirect') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.