# CVE-2026-14157: ASUS Router format string in web management interface

Source: https://junglewise.ai/threats/cve-2026-14157-use-of-an-externally-controlled-format-string-in-the-asus-router  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-01. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-14157 · Severity: info · Published 2026-10-01

ASUS routers contain a format string vulnerability in their web management interface that allows an authenticated attacker to execute arbitrary commands by uploading a specially crafted file. A compromised account or insider with router access could use this to gain full control of the network gateway.

Technologies: [ASUS Router](https://junglewise.ai/threats/technologies/asus-router). Vendors: [ASUS](https://junglewise.ai/threats/vendors/asus).

## Quick answers

**Is CVE-2026-14157 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-14157 being exploited in the wild.

**How severe is CVE-2026-14157?** Informational severity, published 1 October 2026.

**Which products and versions are affected?** ASUS Router.

**Is there a fix for CVE-2026-14157?** 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-2026-14157 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-14157?** Check whether you run ASUS Router. 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 format string vulnerability exists in ASUS router modules accessible through the web management interface. An authenticated remote attacker can exploit this via a crafted file upload to execute arbitrary commands on the device. No fix version or timeline is provided in the advisory.

## Affected products

- ASUS Router

## Timeline

- 2026-10-01: disclosed

## References

- [https://www.asus.com/security-advisory](https://www.asus.com/security-advisory)

## Related threats

- [ASUS router OS command injection and CSRF in administrator interface](https://junglewise.ai/threats/cve-2026-75779-improper-neutralization-of-special-elements-used-in-an-os-command)
- [ASUS router command injection in factory-default state](https://junglewise.ai/threats/cve-2026-75775-improper-neutralization-of-special-elements-used-in-an-os-command)
- [ASUS router missing authentication for critical function](https://junglewise.ai/threats/cve-2026-75753-missing-authentication-for-a-critical-function-in-certain-asus)
- [ASUS router sensitive information insertion into log file](https://junglewise.ai/threats/cve-2026-16528-insertion-of-sensitive-information-into-log-file-in-certain-asus)