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Fencer Vulns
high 7.8

CVE-2017-17099 in the critical feed json

There exists an unauthenticated SEH based Buffer Overflow vulnerability in the HTTP server of Flexense SyncBreeze Enterprise v10.1.16.

published 2017-12-03 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-8265

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.8%
EPSS 11.8% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

There exists an unauthenticated SEH based Buffer Overflow vulnerability in the HTTP server of Flexense SyncBreeze Enterprise v10.1.16. When sending a GET request with an excessive length, it is possible for a malicious user to overwrite the SEH record and execute a payload that would run under the Windows SYSTEM account.

Exploit prediction

11.83% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • exploit-db.com https://www.exploit-db.com/exploits/42984/ referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/144586/Sync-Breeze-Enterprise-10.1.16-SEH-Overflow.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.