An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, F
Affects FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, 7.2.0 through 7.2.9, and all 7.0 versions. Fixed in 8.0.2 or above.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 8.0.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: active
- Automatable: yes
- Technical impact: total
Summary
Fortinet FortiMail email security appliances in several release branches are affected by this flaw. An unauthenticated attacker could exploit it to write arbitrary files on the underlying system by sending specially crafted web requests, potentially compromising the device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9, FortiMail 7.0 all versions may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.
Timeline
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CVE published
- CISA SSVC assessment
Exploitation: active · Automatable: yes · Technical impact: total
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
Affected versions
- Fortinet FortiMail
From 8.0.0 · through 8.0.1; From 7.6.0 · through 7.6.6; From 7.4.0 · through 7.4.8; From 7.2.0 · through 7.2.9; From 7.0.0 · through 7.0.9
References 1
fortiguard.fortinet.com
Questions about CVE-2026-104286
What does this mean?
A path traversal flaw lets crafted input write files to places outside the intended directory on the underlying system. The advisory says this can lead to execution of unauthorized code or commands.Source: fortiguard.fortinet.com
Am I affected, and how do I check?
Affected versions are FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, 7.2.0 through 7.2.9, and all versions of 7.0. Check the firmware version shown on the FortiMail admin dashboard or in the CLI with the get system status command.Source: fortiguard.fortinet.com
What should I do about it?
Upgrade to FortiMail 8.0.2 or above. If an upgrade cannot be done right away, the advisory gives a workaround: disable IBE service in the GUI (Encryption > IBE > IBE Service off) or run set status disable under config system encryption ibe.Source: fortiguard.fortinet.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-10-01, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data