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Fencer Vulns
high 8.8

CVE-2017-17996 json

A buffer overflow vulnerability in "Add command" functionality exists in Flexense SyncBreeze Enterprise <= 10.3.14.

published 2018-02-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-9138

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.1%
EPSS 5.1% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

A buffer overflow vulnerability in "Add command" functionality exists in Flexense SyncBreeze Enterprise <= 10.3.14. The vulnerability can be triggered by an authenticated attacker who submits more than 5000 characters as the command name. It will cause termination of the SyncBreeze Enterprise server and possibly remote command execution with SYSTEM privilege.

Exploit prediction

5.08% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • seclists.org http://seclists.org/fulldisclosure/2018/Feb/10 referenced PoC, tagged "exploit" by a source, unverified
  • ryantzj.com http://www.ryantzj.com/flexense-syncbreeze-entreprise-10314-buffer-overflow-seh-bypass.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/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.