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High

Heap-based buffer overflow in FortiAnalyzer Cloud/FortiManager Cloud oftpd daemon

IdentifiersCVE-2026-22828CWE-122· Heap-based Buffer Overflow

CVE-2026-22828 is a heap-based buffer overflow in the oftpd daemon affecting FortiAnalyzer Cloud and FortiManager Cloud versions 7.6.2 through 7.6.4. According to the provided content, the flaw is reachable remotely without authentication via specifically crafted requests. Successful exploitation may corrupt heap memory in the daemon, leading to arbitrary code or command execution, or causing the affected service to crash. The content also notes that exploitation is considered difficult in practice due to ASLR and network segmentation.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

A successful exploit can allow a remote unauthenticated attacker to execute arbitrary code or commands in the context of the vulnerable service. Where code execution is not achieved, the vulnerability may still be used to crash the oftpd service, resulting in denial of service. Because the affected products are FortiAnalyzer Cloud and FortiManager Cloud, compromise could impact centralized logging, analytics, and management functions.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure of the vulnerable service by restricting network reachability to the oftpd daemon and limiting access paths through segmentation and ACLs. Monitor for crashes or anomalous requests targeting the service, and prioritize remediation on any internet-reachable or broadly accessible deployments. The content does not provide any vendor-specific workaround beyond applying the security update.

Remediation

Patch, then assume compromise.

Upgrade FortiAnalyzer Cloud and FortiManager Cloud to a vendor-fixed release that addresses CVE-2026-22828. The provided content states that affected versions are 7.6.2 through 7.6.4 and that Fortinet has released a security update for this issue under PSIRT advisory FG-IR-26-121. Apply the Fortinet-provided update as soon as possible.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
FortinetFortianalyzer Cloudapplication
FortinetFortianalyzercloudapplication
FortinetFortimanager Cloudapplication
FortinetFortimanagercloudapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity4

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-22828
NVD
nvd.nist.gov/vuln/detail/CVE-2026-22828
MITRE CWE · CWE-122
Heap-based Buffer Overflow
Vendor Advisory
fortiguard.fortinet.com/psirt/FG-IR-26-121