What is CVE-2021-3850?

CVE-2021-3850 is a critical-severity vulnerability in Adodb Adodb/adodb, classified under Authentication Bypass by Primary Weakness. CVSS score: 9.1/10. Published 2022-01-25.

How severe is CVE-2021-3850?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Adodb Adodb/adodb

CVE-2021-3850

Authentication Bypass by Primary Weakness in GitHub repository adodb/adodb prior to 5.20.21.

Published 2022-01-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.022 (81.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Adodb Adodb/adodb — versions unspecified
Adodb Project
Debian Linux — versions 9.0

Weakness classification (CWE)

References

huntr.dev/bounties/bdf5f216-4499-4225-a737-b28bc6f5801c (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/adodb/adodb/commit/952de6c4273d9b1e91c2b838044f8c2111150c29 (Patch, Third Party Advisory)
lists.debian.org/debian-lts-announce/2022/02/msg00006.html (mailing-list, Mailing List, Third Party Advisory)
www.debian.org/security/2022/dsa-5101 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3850?: CVE-2021-3850 is a critical-severity vulnerability in Adodb Adodb/adodb, classified under Authentication Bypass by Primary Weakness. CVSS score: 9.1/10. Published 2022-01-25.
How severe is CVE-2021-3850?: Critical severity. CVSS v3 base score is 9.1 out of 10.