Auth bypass in Reolink

CVE-2025-55621

An Insecure Direct Object Reference (IDOR) vulnerability in Reolink v4.54.0.4.20250526 allows unauthorized attackers to access and download other users' profile photos via a crafted URL. NOTE: this is disputed by the Supplier because it is intentional behavior; the photos are part of a social platform on which users expect to find one another.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-55621: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Reolink — versions 4.54.0.4.20250526

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-55621?
CVE-2025-55621 is a medium-severity vulnerability in Reolink, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2025-08-22.
How severe is CVE-2025-55621?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-55621 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.