# CVE-2026-14169: ads-tec Industrial IT IRF series password overwrite via incorrect behavior order

Source: https://junglewise.ai/threats/cve-2026-14169-ads-tec-industrial-it-irf-series-password-overwrite-via-incorrect  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-28. Updated: 2026-07-28  
License: CC BY 4.0 with a link back

CVE-2026-14169 · Severity: high · CVSS 8.1 · Published 2026-07-28

ADS-TEC Industrial IT IRF series firewalls and routers are affected by a security flaw that allows a user with low-level access to lock others out of the system. By sending specifically crafted input, an attacker can overwrite existing user passwords and put the device into an inconsistent state. This can result in a total loss of administrative access, preventing legitimate managers from configuring or maintaining the network equipment.

Technologies: [ads-tec Industrial IT DVG-IRF1401](https://junglewise.ai/threats/technologies/dvg-irf1401), [ads-tec Industrial IT DVG-IRF1421](https://junglewise.ai/threats/technologies/dvg-irf1421), [ads-tec Industrial IT DVG-IRF3401](https://junglewise.ai/threats/technologies/dvg-irf3401), [ads-tec Industrial IT DVG-IRF3421](https://junglewise.ai/threats/technologies/dvg-irf3421), [ads-tec Industrial IT DVG-IRF3801](https://junglewise.ai/threats/technologies/dvg-irf3801), [ads-tec Industrial IT DVG-IRF3821](https://junglewise.ai/threats/technologies/dvg-irf3821). Vendors: [ads-tec Industrial IT](https://junglewise.ai/threats/vendors/ads-tec-industrial-it).

## Quick answers

**Is CVE-2026-14169 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-14169 being exploited in the wild.

**How severe is CVE-2026-14169?** High severity, with a CVSS score of 8.1, published 28 July 2026.

**Which products and versions are affected?** ads-tec Industrial IT DVG-IRF1401 1.0.0 to <2.3.0; ads-tec Industrial IT DVG-IRF1421 1.0.0 to <2.3.0; ads-tec Industrial IT DVG-IRF3401 1.0.0 to <2.3.0; ads-tec Industrial IT DVG-IRF3421 1.0.0 to <2.3.0; and 2 more.

**Is there a fix for CVE-2026-14169?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-14169 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-14169?** Check whether you run ads-tec Industrial IT DVG-IRF1401, ads-tec Industrial IT DVG-IRF1421, ads-tec Industrial IT DVG-IRF3401 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A vulnerability classified as Incorrect Behavior Order (CWE-696) exists in the configuration interface of ADS-TEC IRF1000 and IRF3000 series devices. A remote attacker with low-privileged credentials can provide crafted input that exploits the sequence of operations within the account management logic. This allows the attacker to overwrite the passwords of other existing users, including administrators. Successful exploitation results in a denial-of-service condition regarding device management (administrative unavailability). The issue is resolved in firmware version 2.3.0.

## Affected products

- ads-tec Industrial IT DVG-IRF1401 1.0.0 to <2.3.0
- ads-tec Industrial IT DVG-IRF1421 1.0.0 to <2.3.0
- ads-tec Industrial IT DVG-IRF3401 1.0.0 to <2.3.0
- ads-tec Industrial IT DVG-IRF3421 1.0.0 to <2.3.0
- ads-tec Industrial IT DVG-IRF3801 1.0.0 to <2.3.0
- ads-tec Industrial IT DVG-IRF3821 1.0.0 to <2.3.0

## Timeline

- 2026-07-28: advisory: Advisory VDE-2026-076 published by CERT@VDE
- 2026-07-28: disclosed: CVE-2026-14169 published to NVD

## References

- [https://www.certvde.com/en/advisories/VDE-2026-076/](https://www.certvde.com/en/advisories/VDE-2026-076/)

## Related threats

- [ads-tec Industrial IT IRF Products open redirect in web-UI](https://junglewise.ai/threats/cve-2026-14171-ads-tec-industrial-it-irf-products-open-redirect-in-web-ui)
- [ads-tec Industrial IT IRF Products missing authorization in configuration table](https://junglewise.ai/threats/cve-2026-14168-ads-tec-industrial-it-irf-products-missing-authorization-in)
- [ads-tec Industrial IT IRF Products incorrect authorization in Web UI](https://junglewise.ai/threats/cve-2026-14167-ads-tec-industrial-it-irf-products-incorrect-authorization-in-web)