What is CVE-2020-5517?

CVE-2020-5517 is a medium-severity vulnerability in Blueonyx 5209r, classified under Cross-Site Request Forgery (CSRF). CVSS score: 6.5/10. Published 2020-05-05.

How severe is CVE-2020-5517?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2020-5517 known to be exploited?

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

CSRF in Blueonyx 5209r

CVE-2020-5517

CSRF in the /login URI in BlueOnyx 5209R allows an attacker to access the dashboard and perform scraping or other analysis.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2020-05-05 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.006 (48.8th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.8% 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: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

gist.github.com/CyberSecurityUP/26c5b032897630fe8407da4a8ef216d4 (Exploit, Third Party Advisory)
www.blueonyx.it/news/278/15/5209R5210R-YUM-Updates/ (Release Notes, Vendor Advisory)
devel.blueonyx.it/trac/changeset/4034/ (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-5517?: CVE-2020-5517 is a medium-severity vulnerability in Blueonyx 5209r, classified under Cross-Site Request Forgery (CSRF). CVSS score: 6.5/10. Published 2020-05-05.
How severe is CVE-2020-5517?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2020-5517 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.