Security readout for executives and security teams
Plain-English summary
This flaw can let someone who already has a valid SSL-VPN portal cookie reuse it after the session should have expired or after logout. It is not a direct login bypass from nothing, but it weakens session termination and could extend unauthorized access if a cookie is stolen.
Executive priority
Handle this as a targeted VPN session-risk issue, not a broad unauthenticated compromise. Remediate affected internet-facing Fortinet systems promptly because VPN portals protect sensitive internal access and stolen cookies can bypass normal session termination expectations.
Technical view
CVE-2024-50562 is CWE-613 insufficient session expiration affecting Fortinet products, including FortiOS SSL-VPN versions listed in the source bundle. Attack requires possession of a prior login cookie. CVSS is 4.4 with high attack complexity, low confidentiality and integrity impact, and no availability impact.
Likely exposure
Exposure is most relevant to organizations running affected Fortinet SSL-VPN portals or listed FortiPAM/FortiProxy versions, especially internet-facing appliances where session cookies could be captured through separate compromises.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The CVSS vector marks exploit code maturity as proof-of-concept, but the bundle does not provide exploit details.
Researcher notes
Evidence supports session cookie reuse after expiration or logout when the attacker already possesses a cookie. The bundle does not include patch version text, workaround details, or proof of exploitation in the wild, so validation should stay focused on version exposure, SSL-VPN enablement, and session telemetry.
Mitigation direction
- Review Fortinet FG-IR-24-339 for the vendor-approved fixed versions.
- Check Siemens SSA-864900 if Siemens-managed or embedded Fortinet components are in scope.
- Prioritize remediation for internet-facing SSL-VPN portals.
- Invalidate active VPN sessions after vendor-directed remediation.
- Treat exposed or stolen SSL-VPN cookies as account compromise indicators.
Validation and detection
- Inventory FortiOS, FortiPAM, and FortiProxy versions against the affected ranges.
- Confirm whether SSL-VPN portal access is enabled and externally reachable.
- Review logs for reused sessions after logout or expected expiration.
- Check vulnerability scanners for CVE-2024-50562 coverage and Fortinet version detection.
- Verify remediation status against Fortinet and Siemens advisory guidance.
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
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ATT&CK lookup starting points
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CWE-613: Exact CWE lookup
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Open ATT&CK lookupCVE-2024-50562 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
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:X/RC:R
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:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:X/RC:R2.22.5fortinetVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:X/RC:R
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-24-339CVE 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.