What is CVE-2021-42216?

CVE-2021-42216 is a critical-severity vulnerability in Anonaddy, classified under Inadequate Encryption Strength. CVSS score: 9.8/10. Published 2021-12-15.

How severe is CVE-2021-42216?

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

Vulnerability in Anonaddy

CVE-2021-42216

A Broken or Risky Cryptographic Algorithm exists in AnonAddy 0.8.5 via VerificationController.php.

Published 2021-12-15 · last modified 2026-07-09.

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: 0.012 (66.2th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Anonaddy — versions 0.8.5

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

af854a3a-2127-422b-91ae-364da2661108 (Product)
github.com/anonaddy/anonaddy/blob/0478d9e8d364787f203113544123048a41f022c0/app/… (Patch, Third Party Advisory)
huntr.dev/bounties/419f4e8a-ee15-4f80-bcbf-5c83513515dd (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-42216?: CVE-2021-42216 is a critical-severity vulnerability in Anonaddy, classified under Inadequate Encryption Strength. CVSS score: 9.8/10. Published 2021-12-15.
How severe is CVE-2021-42216?: Critical severity. CVSS v3 base score is 9.8 out of 10.