Is CVE-2025-61624 actively exploited?

Yes. Previdian tracks CVE-2025-61624 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has Previdian observed?

Previdian has not yet recorded sensor-observed exploitation attempts for CVE-2025-61624. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2025-61624 affects Fortinet FortiOS and 3 other products. Previdian lists 20 version rows; examples include 0 to < *, 7.6.0 to <= 7.6.4, and 7.4.0 to <= 7.4.9.

Yes. CVE-2025-61624 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Added to Previdian from a trusted third-party report 1 day before CISA listed it.

CVE-2025-61624 Exploited in the Wild — Fortinet

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

Yes. CVE-2025-61624 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Added to Previdian from a trusted third-party report 1 day before CISA listed it.

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2025-61624 is a vulnerability affecting Fortinet FortiOS and 3 other products. An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') [CWE-22] vulnerability in Fortinet FortiOS 7.6.0...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Fortinet / FortiOS affected before *.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

FortiOS Path Traversal

An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') [CWE-22] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiPAM 1.7.0, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.11, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions, FortiSwitchManager 7.2.0 through 7.2.7, FortiSwitchManager 7.0.0 through 7.0.6 may allow an authenticated attacker with admin profile and at least read-write permissions to write or delete arbitrary files via specific CLI commands.

Vendor Product Affected Status

Siemens Affected

RUGGEDCOM APE1808

Before *

Affected

Fortinet Affected

FortiOS

Through 7.6.4 Through 7.4.9 Through 7.2.13 Through 7.0.19 Through 6.4.16

Affected

Fortinet Affected

FortiProxy

Through 7.6.4 Through 7.4.11 Through 7.2.16 Through 7.0.23

Affected

Fortinet Affected

FortiSwitchManager

Through 7.2.7 Through 7.0.6

Affected

Fortinet Affected

FortiPAM

1.7.0 Through 1.6.2 Through 1.5.1 Through 1.4.3 Through 1.3.1 1.2.0 Through 1.1.2 Through 1.0.3

Affected

Published: 14 Apr 2026
Exploitation Reported: 15 Oct 2026
Attack vector: Local
Complexity: Low
Privileges: High
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2025-61624
https://fortiguard.fortinet.com/psirt/FG-IR-26-122 fortiguard.fortinet.com · CVE Record https://fortiguard.fortinet.com/psirt/FG-IR-26-122

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Palo Alto Unit42

Recorded 15 Oct 2026

A trusted third party reported exploitation.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access

Source	Added
Palo Alto Unit42 First	2026-10-15 14:59 UTC
The Hacker News	2026-10-16 05:34 UTC
CISA	2026-10-16 17:31 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts: 0; 0; 0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

5.4 Medium

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C

EPSS

0.6%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-22

Recent mention · Security Affairs

16 Oct 2026

PEERSTITCH malware: How Attackers Compromised 500 Firewalls Through FortiManager

PEERSTITCH malware exploited FortiManager to expose 500+ firewalls, evade detection inside FortiOS memory, and maintain stealthy access. PEERSTITCH, a stealthy implant deployed during a prolonged intrusion, helped attackers maintain access to a telecom managed service provider...

Read full advisory

All Mentions

Recent mention · Security Affairs

PEERSTITCH malware: How Attackers Compromised 500 Firewalls Through FortiManager

Security Affairs · 16 Oct 2026

PEERSTITCH malware exploited FortiManager to expose 500+ firewalls, evade detection inside FortiOS memory, and maintain stealthy access. PEERSTITCH, a stealthy implant deployed during a prolonged intrusion, helped attackers maintain access to a telecom managed service provider after compromising its FortiManager appliance. Palo Alto Networks Unit 42 documented the operation, which began in September 2024 and […]

Recent mention · The Hacker News

PEERSTITCH Malware Deployed via FortiOS Flaw Bypasses Checks on Tagged VPN Sessions

The Hacker News · 16 Oct 2026

Ravie LakshmananOct 16, 2026Vulnerability / Network Security A suspected advanced threat actor has been observed exploiting a security flaw in Fortinet FortiOS to deliver a previously unreported memory-resident ARM64 malware known as PEERSTITCH. The attack involves the exploitation of CVE-2025-61624 (CVSS score: 5.4), a path traversal flaw in the command line interpreter of FortiOS, FortiPAM, FortiProxy, and FortiSwitchManager that could allow a privileged attacker to achieve arbitrary write or delete files via specifically crafted arguments to existing commands. It was patched by...

Timeline

From disclosure to observed exploitation

16 Oct 2026
17:31 UTC

Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
16 Oct 2026
05:34 UTC

KEV confirmed by The Hacker News

Exploitation attested by an external source
15 Oct 2026
14:59 UTC

Added to Previdian KEV Feed

High-confidence, third-party attested exploitation
14 Apr 2026
15:39 UTC

CVE published

Vulnerability disclosed publicly
29 Sep 2025
07:36 UTC

CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2025-61624

Sample API response

{
  "cve_id": "CVE-2025-61624",
  "confidence": "Confirmed",
  "cvss_score": 5.4,
  "cvss_estimated": false,
  "epss_score": 0.0058,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

CVE-2025-61624

FortiOS Path Traversal

Tags

CVE References

Exploited in the wild

Known exploited vulnerability sources

Observed signals

Scanner coverage

Virtual patch status

Weaknesses

PEERSTITCH malware: How Attackers Compromised 500 Firewalls Through FortiManager

All Mentions

Added to CISA KEV

KEV confirmed by The Hacker News

Added to Previdian KEV Feed

CVE published

CVE ID reserved

Automate this intelligence