# CVE-2026-116231: Oray Pugongying X5 Pro CRLF injection in Ser2net

Source: https://junglewise.ai/threats/cve-2026-116231-a-security-flaw-has-been-discovered-in-oray-pugongying-x5-pro-7  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-26. Updated: 2026-10-26  
License: CC BY 4.0 with a link back

CVE-2026-116231 · Severity: critical · CVSS 9.9 · Published 2026-10-26

Oray Pugongying X5 Pro is a network router used in business environments. A critical flaw allows remote attackers to inject carriage return and line feed characters into serial port data through a manipulation of the regmsg argument in the Ser2net component, potentially leading to file overwrites or other attacks. The exploit code has been publicly released and the vendor has not responded to reports of the vulnerability.

Technologies: [Oray Pugongying X5 Pro](https://junglewise.ai/threats/technologies/pugongying-x5-pro). Vendors: [Oray](https://junglewise.ai/threats/vendors/oray).

## Quick answers

**Is CVE-2026-116231 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-116231 being exploited in the wild.

**How severe is CVE-2026-116231?** Critical severity, with a CVSS score of 9.9, published 26 October 2026.

**Which products and versions are affected?** Oray Pugongying X5 Pro 7.6.1.

**Is there a fix for CVE-2026-116231?** 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-2026-116231 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-116231?** Check whether you run Oray Pugongying X5 Pro 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 CRLF injection vulnerability exists in an unknown function of the Ser2net component in Oray Pugongying X5 Pro 7.6.1, triggered by manipulation of the regmsg argument. The vulnerability can be exploited remotely without authentication or user interaction. An attacker can inject arbitrary carriage return and line feed sequences to corrupt or overwrite serial port communication and potentially files on the device.

## Affected products

- Oray Pugongying X5 Pro 7.6.1

## Timeline

- 2026-10-26: disclosed

## References

- [https://app.notion.com/p/Oray-Pgyer-X5-Pro-Router-7-6-1-A-Serial-Banner-Newline-Lets-ser2net-Overwrite-Existing-Files-3ea797159f158019b687eadcc7d6a85b](https://app.notion.com/p/Oray-Pgyer-X5-Pro-Router-7-6-1-A-Serial-Banner-Newline-Lets-ser2net-Overwrite-Existing-Files-3ea797159f158019b687eadcc7d6a85b)
- [https://vuldb.com/cve/CVE-2026-116231](https://vuldb.com/cve/CVE-2026-116231)

## Related threats

- [Oray Pugongying X5 Pro path traversal in config_restore_ex](https://junglewise.ai/threats/cve-2026-120225-a-weakness-has-been-identified-in-oray-pugongying-x5-pro-up-to-7)
- [Oray Pugongying X5 Pro API authorization bypass](https://junglewise.ai/threats/cve-2026-120224-a-security-flaw-has-been-discovered-in-oray-pugongying-x5-pro-up)
- [Oray Pugongying X5 Pro CRLF injection in Dnsmasq](https://junglewise.ai/threats/cve-2026-116237-a-vulnerability-was-found-in-oray-pugongying-x5-pro-7-6-1-this)
- [Oray Pugongying X5 Pro unrestricted file upload in PPPoE handler](https://junglewise.ai/threats/cve-2026-116236-a-vulnerability-has-been-found-in-oray-pugongying-x5-pro-7-6-1)
- [Oray Pugongying X5 Pro CRLF injection in L2TP authentication](https://junglewise.ai/threats/cve-2026-116235-a-flaw-has-been-found-in-oray-pugongying-x5-pro-7-6-1-affected)