Security readout for executives and security teams
Plain-English summary
CVE-2025-57740 affects Fortinet FortiOS, FortiPAM, and FortiProxy RDP bookmark connections. An authenticated user could send crafted requests that may lead to unauthorized code execution. The public data rates it medium severity, but successful exploitation could affect confidentiality, integrity, and availability.
Executive priority
Treat as a scheduled but prompt remediation item, elevated for internet-facing or broadly accessible Fortinet deployments. The issue requires authentication and has high complexity, but successful exploitation could lead to code execution on security infrastructure.
Technical view
The issue is a heap-based buffer overflow, CWE-122, in the RDP bookmark connection path. CVSS is 6.7 with network access, high attack complexity, low privileges, no user interaction, and high C/I/A impact. Affected versions include FortiOS 7.6.2 and below, 7.4.7 and below, 7.2.10 and below, all 7.0 and 6.4; listed FortiPAM and FortiProxy ranges also apply.
Likely exposure
Exposure is most likely where FortiOS, FortiPAM, or FortiProxy are deployed with RDP bookmark connection functionality available to authenticated users. Internet-facing management or proxy access would increase operational concern, but the sources do not state exposure requirements beyond network access and authentication.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. CVSS marks exploit code maturity as proof-of-concept, but no public source in the bundle confirms real-world exploitation. Authentication and high attack complexity reduce likelihood, while code execution impact keeps this important.
Researcher notes
Focus triage on the RDP bookmark connection surface and authenticated access paths. The public bundle provides affected version ranges and CVSS details but not enough detail for safe root-cause validation, exploitability assessment, or fixed-version mapping without the vendor advisories.
Mitigation direction
- Check Fortinet FG-IR-25-756 for official fixed versions and mitigations.
- Check Siemens SSA-864900 if Siemens-packaged or dependent products are in scope.
- Upgrade affected FortiOS, FortiPAM, and FortiProxy systems according to vendor guidance.
- Limit RDP bookmark access to trusted authenticated users until remediated.
- Review whether vulnerable product branches remain supported in your environment.
Validation and detection
- Inventory FortiOS, FortiPAM, and FortiProxy versions across all environments.
- Compare deployed versions against the affected ranges in the CVE record.
- Identify systems using or exposing RDP bookmark connection functionality.
- Review access logs for unusual authenticated RDP bookmark activity.
- Confirm remediation by verifying upgraded versions against vendor advisories.
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-122: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2025-57740 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
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/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:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C1.65.9fortinetVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/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-25-756CVE 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.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.