What is CVE-2020-8180?

CVE-2020-8180 is a critical-severity vulnerability in Nextcloud Talk, classified under Code Injection. CVSS score: 9.9/10. Published 2020-06-08.

How severe is CVE-2020-8180?

Critical severity. CVSS v3 base score is 9.9 out of 10.

RCE in Nextcloud Talk

CVE-2020-8180

A too lax check in Nextcloud Talk 6.0.4, 7.0.2 and 8.0.7 allowed a code injection when a not correctly sanitized talk command was added by an administrator.

Vulnerability class: RCE (Remote Code Execution)

Published 2020-06-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (75.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Nextcloud Talk
Nextcloud Talk — versions Fixed in >= 8.0.8

Weakness classification (CWE)

CWE-94 — Code Injection

References

hackerone.com/reports/851807 (Exploit, Patch, Third Party Advisory)
nextcloud.com/security/advisory/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-8180?: CVE-2020-8180 is a critical-severity vulnerability in Nextcloud Talk, classified under Code Injection. CVSS score: 9.9/10. Published 2020-06-08.
How severe is CVE-2020-8180?: Critical severity. CVSS v3 base score is 9.9 out of 10.