Unauthenticated service crash via unbounded sprintf
Published May 27, 2026 · Updated May 27, 2026
Stack-based buffer overflow in Gladinet Triofox Server Agent before 17.3.10565.57509 allows remote attackers to crash its service via HTTP. WOSDeviceDropFolder.dll passes attacker-controlled text after /resources/ to sprintf, which writes a gsync_ string into a fixed-size stack buffer without a length bound. Exploitation requires network access to the agent's TCP port 7878; the published request demonstrates termination with STATUS_STACK_BUFFER_OVERRUN.
Summary
What happened
Stack-based buffer overflow in Gladinet Triofox Server Agent before 17.3.10565.57509 allows remote attackers to crash its service via HTTP. WOSDeviceDropFolder.dll passes attacker-controlled text after /resources/ to sprintf, which writes a gsync_ string into a fixed-size stack buffer without a length bound. Exploitation requires network access to the agent's TCP port 7878; the published request demonstrates termination with STATUS_STACK_BUFFER_OVERRUN.
The record
- CVE
- CVE-2026-8363
- Published
- May 27, 2026
- Updated
- May 27, 2026
- Vendor
- Gladinet
- Product
- Triofox
- Classifications
- CWE-121, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 27, 2026CVE publishedPublication date reported by the CVE source.
- May 27, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <17.3.10565.57509
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Tenable HTTP service-crash proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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