What is CVE-2017-15220?

CVE-2017-15220 is a critical-severity vulnerability in Flexense Vx Search, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-10-11.

How severe is CVE-2017-15220?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-15220 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Flexense Vx Search

CVE-2017-15220

Flexense VX Search Enterprise 10.1.12 is vulnerable to a buffer overflow via an empty POST request to a long URI beginning with a /../ substring. This allows remote attackers to execute arbitrary code.

Vulnerability class: Buffer Overflow

Published 2017-10-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.071 (94.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.071 · newest: 0.071 · change: 0.000

Affected products

Flexense Vx Search — versions 10.1.12

Weakness classification (CWE)

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

Public proof-of-concept exploits

References

www.exploit-db.com/exploits/42973/ (VDB Entry, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2017-15220?: CVE-2017-15220 is a critical-severity vulnerability in Flexense Vx Search, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-10-11.
How severe is CVE-2017-15220?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-15220 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.