Security readout for executives and security teams
Plain-English summary
CVE-2024-55591 lets an unauthenticated remote attacker bypass authentication and gain super-admin privileges on affected Fortinet FortiOS and FortiProxy versions. This is critical because it can give full control of security gateway infrastructure. CISA lists it in the Known Exploited Vulnerabilities catalog, so organizations should treat exposure as urgent.
Executive priority
Emergency priority for exposed Fortinet systems. Because CISA confirms known exploitation and impact is full administrative control, remediation should be handled ahead of routine patch cycles.
Technical view
The flaw is CWE-288 authentication bypass using an alternate path or channel. Fortinet describes crafted requests to a Node.js websocket module enabling super-admin access. Affected versions are FortiOS 7.0.0 through 7.0.16, FortiProxy 7.0.0 through 7.0.19, and FortiProxy 7.2.0 through 7.2.12. CVSS is 9.6.
Likely exposure
Highest risk is any affected FortiOS or FortiProxy instance reachable by an untrusted network. Internet-exposed management or proxy infrastructure should be prioritized first. Internal-only systems are still at risk if attackers have network reachability.
Exploitation context
Active exploitation is supported by CISA KEV listing. The vulnerability requires no prior authentication, no user interaction, and low attack complexity per the CVSS vector. Sources do not provide safe operational details about exploit methods beyond crafted websocket-module requests.
Researcher notes
The public source bundle confirms product ranges, CVSS 9.6, CWE-288, and KEV status. It does not include exploit code, indicators, or detailed workaround text. Use Fortinet PSIRT as the authoritative source for fixed releases and any mitigations.
Mitigation direction
- Identify all FortiOS and FortiProxy assets and their exact versions.
- Prioritize internet-facing or externally reachable Fortinet systems.
- Upgrade outside the affected version ranges per Fortinet PSIRT guidance.
- If immediate upgrade is impossible, follow Fortinet’s published workaround guidance.
- Review administrative accounts and configuration changes for unauthorized activity.
Validation and detection
- Confirm whether FortiOS is 7.0.0 through 7.0.16.
- Confirm whether FortiProxy is 7.0.0 through 7.0.19.
- Confirm whether FortiProxy is 7.2.0 through 7.2.12.
- Verify remediation against the Fortinet PSIRT advisory.
- Check CISA KEV status and required remediation timelines where applicable.
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-288: 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-55591 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
- Critical
- CVSS
- 9.6 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/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.
CISA KEV status
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:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C3.95.9fortinetVulnerability scoring details
Base CVSS 3.1 score
9.6CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/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.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2024-55591 added to CISA KEV
- 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
- 2025-01-14T00:00:00.000Z: CVE-2024-55591 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://fortiguard.fortinet.com/psirt/FG-IR-24-535CVE reference, fortinet
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-55591CVE reference, CISA-ADP · 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.