What is CVE-2018-25328?

CVE-2018-25328 is a high-severity vulnerability in Vxsearch Vx Search, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-05-17.

How severe is CVE-2018-25328?

High severity. CVSS v3 base score is 8.4 out of 10.

Buffer overflow in Vxsearch Vx Search

CVE-2018-25328

VX Search 10.6.18 contains a local buffer overflow vulnerability that allows attackers to overwrite the instruction pointer by supplying an oversized string in the directory field. Attackers can craft a malicious input file containing 271 bytes of junk data followed by a return address to execute arbitrary code with application privileges.

Vulnerability class: Buffer Overflow

Published 2026-05-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Vxsearch Vx Search — versions 10.6.18

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.vxsearch.com (product)
www.7elements.co.uk (product)
www.exploit-db.com/exploits/44494 (exploit)
www.vulncheck.com/advisories/vx-search-local-buffer-overflow-via-directory-field (third-party-advisory)

Frequently asked questions

What is CVE-2018-25328?: CVE-2018-25328 is a high-severity vulnerability in Vxsearch Vx Search, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-05-17.
How severe is CVE-2018-25328?: High severity. CVSS v3 base score is 8.4 out of 10.