What is CVE-2026-2550?

CVE-2026-2550 is a critical-severity vulnerability in Efm Iptime A6004mx, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-02-16.

How severe is CVE-2026-2550?

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

Arbitrary file upload in Efm Iptime A6004mx

CVE-2026-2550

A vulnerability was found in EFM iptime A6004MX 14.18.2. Affected is the function commit_vpncli_file_upload of the file /cgi/timepro.cgi. The manipulation results in unrestricted upload. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Published 2026-02-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.009 · change: +0.003

Affected products

Efm Iptime A6004mx — versions 14.18.2

Weakness classification (CWE)

References

vuldb.com/ (technical-description, vdb-entry)
vuldb.com/ (signature, permissions-required)
vuldb.com/ (third-party-advisory)
github.com/LX-LX88/cve-new/issues/3 (issue-tracking, exploit)

Frequently asked questions

What is CVE-2026-2550?: CVE-2026-2550 is a critical-severity vulnerability in Efm Iptime A6004mx, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-02-16.
How severe is CVE-2026-2550?: Critical severity. CVSS v3 base score is 9.8 out of 10.