What is CVE-2018-1000501?

CVE-2018-1000501 is a critical-severity vulnerability in Instant-Update Instant Update Cms, classified under Weak Password Recovery Mechanism for Forgotten Password. CVSS score: 9.8/10. Published 2018-06-26.

How severe is CVE-2018-1000501?

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

Vulnerability in Instant-Update Instant Update Cms

CVE-2018-1000501

Instant Update CMS contains a Password Reset Vulnerability vulnerability in /iu-application/controllers/administration/auth.php that can result in Account Tackover. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in v0.3.3.

Published 2018-06-26 · 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: 0.016 (74.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Instant-Update Instant Update Cms

Weakness classification (CWE)

CWE-640 — Weak Password Recovery Mechanism for Forgotten Password

References

my.instant-update.com/t/i-wanna-to-report-an-security-issue/659/3 (Vendor Advisory)
github.com/InstantUpdate/CMS/commit/5e70496b6b0c4cd554e62a709a248c1584533da6 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-1000501?: CVE-2018-1000501 is a critical-severity vulnerability in Instant-Update Instant Update Cms, classified under Weak Password Recovery Mechanism for Forgotten Password. CVSS score: 9.8/10. Published 2018-06-26.
How severe is CVE-2018-1000501?: Critical severity. CVSS v3 base score is 9.8 out of 10.